============================ Standard Column Descriptions ============================ This file is an auto-generated version of `column_descriptions.csv`_, which contains the descriptions of table column names regardless of what file(s) they appear in. .. _`column_descriptions.csv`: https://github.com/desihub/desidatamodel/blob/main/py/desidatamodel/data/column_descriptions.csv ================================= =========== ================================= ==================================================================================================================================================================================== =============================================================================================================================================================================================================================================== Name Type Units Description FullDescription ================================= =========== ================================= ==================================================================================================================================================================================== =============================================================================================================================================================================================================================================== ABSMAG01_SDSS_G float32 mag g-corrected (to z=0.1) absolute magnitude in the SDSS g band from fastspecfit g-corrected (to z=0.1) absolute magnitude in the SDSS g band from fastspecfit ABSMAG01_SDSS_R float32 mag r-corrected (to z=0.1) absolute magnitude in the SDSS r band from fastspecfit r-corrected (to z=0.1) absolute magnitude in the SDSS r band from fastspecfit ABSMAG_R float64 mag Absolute r-band magnitude after k-correction Absolute magnitude in the r-band after k-correction AIRMASS float32 Average airmass during this exposure Average airmass during this exposure AIRMASS_GFA float64 Average airmass during this exposure from GFA Average airmass during this exposure as measured by GFA APFLUX_G float32 nanomaggy Total g-band flux within a 0.75 arcsec radius Total flux in nanomaggies extracted in a 0.75 arcsec radius in the g band at this location APFLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of APFLUX_G Inverse variance of APFLUX_G APFLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of APFLUX_R Inverse variance of APFLUX_R APFLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of APFLUX_Z Inverse variance of APFLUX_Z APFLUX_R float32 nanomaggy Total r-band flux within a 0.75 arcsec radius Total flux in nanomaggies extracted in a 0.75 arcsec radius in the r band at this location APFLUX_Z float32 nanomaggy Total z-band flux within a 0.75 arcsec radius Total flux in nanomaggies extracted in a 0.75 arcsec radius in the z band at this location A_MGII float32 Fitted parameter A (amplitude) by MgII fitter Fitted parameter A (amplitude) by MgII fitter BETA_MEAN float32 Mean value of the dust emissivity index posterior from Planck Mean value of the dust emissivity index posterior from Planck (Planck Collaboration - A&A 594 2016 - A10) BETA_ML float32 Maximum value of the dust emissivity index posterior from Planck Maximum value of the dust emissivity index posterior from Planck (Planck Collaboration - A\&A 594 2016 - A10) BETA_RMS float32 Root mean square value of the dust emissivity index posterior from Planck Root mean square value of the dust emissivity index posterior from Planck (Planck Collaboration - A&A 594 – 2016 - A10) BGS_TARGET int64 BGS (Bright Galaxy Survey) target sel bitmask BGS (Bright Galaxy Survey) target selection bitmask BITWEIGHTS int64[2] Bitmask pair for alternative target assignment A size of two 64 bit masks that encodes which of the alternative assignment histories that the target was assigned in BLOBDIST float32 pix Max distance from a detected LS source Maximum distance from a detected Legacy Surveys source BRICKID int32 Brick ID from tractor input Brick ID from tractor input BRICKNAME char[8] Brick name from tractor input Brick name from tractor input BRICK_OBJID int32 Imaging Surveys OBJID on that brick Imaging Surveys OBJID on that brick B_MGII float32 Fitted parameter B (constant) by MgII fitter Fitted parameter B (constant) by MgII fitter CALIB_G float32 g-band systematic magnitude calibration residuals constructed by comparing LS stars to stars from Pan-STARRS1 g-band systematic magnitude calibration residuals constructed by comparing LS stars to stars from Pan-STARRS1 (details in Appendix A from DESI 2024 II paper) CALIB_R float32 r-band systematic magnitude calibration residuals constructed by comparing LS stars to stars from Pan-STARRS1 r-band systematic magnitude calibration residuals constructed by comparing LS stars to stars from Pan-STARRS1 (details in Appendix A from DESI 2024 II paper) CALIB_Z float32 z-band systematic magnitude calibration residuals constructed by comparing LS stars to stars from Pan-STARRS1 z-band systematic magnitude calibration residuals constructed by comparing LS stars to stars from Pan-STARRS1 (details in Appendix A from DESI 2024 II paper) CAMERA char[2] Camera identifier [brz][0-9] Camera identifier. Passband and SPECGRPH ([brz][0-9]). CHECKER char[5] Initials of researcher who vetted the target Initials of researcher who vetted the target CHI2 float64 Best fit chi squared Best fit chi squared CMX_TARGET int64 Target selection bitmask for commissioning Target selection bitmask for commissioning COADD_EXPTIME float32 s Summed exposure time for coadd Summed exposure time for coadd COADD_FIBERSTATUS int32 bitwise-AND of input FIBERSTATUS bitwise-AND of input FIBERSTATUS COADD_NUMEXP int16 Number of exposures in coadd Number of exposures in coadd COADD_NUMNIGHT int16 Number of nights in coadd Number of nights in coadd COADD_NUMTILE int16 Number of tiles in coadd Number of tiles in coadd COEFF float64[10] Redrock template coefficients Redrock template coefficients COLLISION bool Boolean for whether given potential assignment had a fiber collision with any keep-out zone Boolean for whether given potential assignment had a fiber collision with any keep-out zone COMP_TILE float64 Assignment completeness given the target class Assignment completeness for all targets of this type with the same value for TILES C_CIII float32 Confidence for CIII line Confidence for CIII line C_CIV float32 Confidence for CIV line Confidence for CIV line C_Halpha float32 Confidence for Halpha line Confidence for Halpha line C_Hbeta float32 Confidence for Hbeta line Confidence for Hbeta line C_LYA float32 Confidence that LyA line (probability for QSO) Confidence for LyA line, i.e. ~probability to be a QSO C_MgII float32 Confidence for MgII line Confidence for MgII line DCHISQ float32[5] Difference in chi-squared between Tractor fits Difference in chi-squared between Tractor model fits DEC float64 deg Barycentric declination in ICRS Barycentric declination in ICRS DEC_IVAR float32 deg^-2 Inverse variance of DEC, excl astrom calib err Inverse variance of DEC, excluding astrometric calibration errors DELTACHI2 float64 chi2 diff b/w 1st and 2nd-best Redrock fits chi2 difference between first- and second-best redrock template fits DELTA_CHI2 float32 chi2 diff b/w Redrock fit and MgII fitter Difference of chi2 between redrock fit and MgII fitter over the lambda interval considered during the fit DELTA_CHI2_MGII float32 chi2 diff b/w Redrock fit and MgII fitter Difference of chi2 between redrock fit and MgII fitter over the lambda interval considered during the fit DELTA_X float64 mm CS5 X requested minus actual position CS5 X requested minus actual position DELTA_Y float64 mm CS5 Y requested minus actual position CS5 Y requested minus actual position DESINAME char[22] Name with truncated decimal TARGET_{RA,DEC} Human readable identifier of a sky location DESI JXXX.XXXX[+/-]YY.YYYY, where X,Y=truncated decimal TARGET_RA, TARGET_DEC, precise to 0.36 arcsec. Multiple objects can map to a single DESINAME if very close on the sky. DESI_TARGET int64 DESI (dark program) target selection bitmask DESI (dark time program) target selection bitmask DEVICE_LOC int32 Device location on focal plane [0-523] Device location on focal plane [0-523] DEVICE_TYPE char[3] Device type Device type EBV float32 mag Galactic extinction E(B-V) from SFD98 Galactic extinction E(B-V) reddening from SFD98 EBV_CHIANG_SFDcorr float32 EBV dust reddening SFD correction EBV dust reddening SFD correction (from Chiang - ApJ 958 – 2023 - 118) EBV_MPF_Mean_FW15 float32 Mean EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ Mean EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ (more details in Mudur Park & Finkbeiner - ApJ 949 – 2023) EBV_MPF_Mean_FW6P1 float32 Mean EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ Mean EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ (more details in Mudur Park & Finkbeiner - ApJ 949 – 2023) EBV_MPF_Mean_ZptCorr_FW15 float32 Zero point correction in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ Zero point correction in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ (more details in Mudur Park & Finkbeiner - ApJ 949 – 2023) EBV_MPF_Mean_ZptCorr_FW6P1 float32 Zero point correction in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ Zero point correction in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ (more details in Mudur Park & Finkbeiner - ApJ 949 – 2023) EBV_MPF_VarCorr_FW15 float32 Uncertainty corrections in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ Uncertainty corrections in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ (more details in Mudur Park & Finkbeiner - ApJ 949 - 2023) EBV_MPF_VarCorr_FW6P1 float32 Uncertainty corrections in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ Uncertainty corrections in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ (more details in Mudur Park & Finkbeiner - ApJ 949 - 2023) EBV_MPF_Var_FW15 float32 Variance in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ Variance in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 15’ (more details in Mudur Park & Finkbeiner - ApJ 949 - 2023) EBV_MPF_Var_FW6P1 float32 Variance in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ Variance in EBV dust reddening generated from a combination of stellar reddening derived from PS1 and 2MASS photometry and Gaia EDR3 parallaxes with a FWHM of 6.1’ (more details in Mudur Park & Finkbeiner - ApJ 949 - 2023) EBV_SGF14 float32 EBV dust reddening from Schlafly Green & Finkbeiner map from PanSTARRS1 EBV dust reddening from Schlafly Green & Finkbeiner map from PanSTARRS1 (details in Appendix A from DESI 2024 II paper) EFFECTIVE_BIAS float64 Effective bias used to weight the galaxy Effective bias used to weight the galaxy EFFTIME_ETC float64 s Effective exp time (nominal conditions; ETC) Effective exposure time for nominal conditions inferred from ETC data EFFTIME_SPEC float64 s Effective exp time (nominal conditions; TSNR2) Effective exposure time for nominal conditions derived from the TSNR2 fits to the spectroscopy EQ_ALL_0P0 float64 e-correction at redshift=0.0 e-correction at redshift=0.0 EQ_ALL_0P1 float64 e-correction at redshift=0.1 e-correction at redshift=0.1 EXPID int32 DESI Exposure ID number DESI Exposure ID number EXPTIME float64 s Length of time shutter was open Length of time shutter was open FAFLAVOR char[*] Fiberassign flavor name Fiberassign flavor name FAPRGRM char[*] Fiberassign program name Fiberassign program name FA_TARGET int64 Internal targeting bit for fiberassign Targeting bit internally used by fiberassign (linked with FA_TYPE) FA_TYPE binary Internal target type for fiberassign Fiberassign internal target type (science, standard, sky, safe, suppsky) FIBER int32 Fiber ID on the CCDs [0-4999] Fiber ID on the CCDs [0-4999] FIBERASSIGN_X float32 mm Fiberassign expected CS5 X loc on focal plane Fiberassign expected CS5 X location on focal plane FIBERASSIGN_Y float32 mm Fiberassign expected CS5 Y loc on focal plane Fiberassign expected CS5 Y location on focal plane FIBERFLUX_G float32 nanomaggy Predicted object g flux within diam 1.5 arcsec Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERFLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of FIBERFLUX_G Inverse variance of ``FIBERFLUX_G`` FIBERFLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of FIBERFLUX_R Inverse variance of ``FIBERFLUX_R`` FIBERFLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of FIBERFLUX_Z Inverse variance of ``FIBERFLUX_Z`` FIBERFLUX_R float32 nanomaggy Predicted object r flux within diam 1.5 arcsec Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERFLUX_Z float32 nanomaggy Predicted object z flux within diam 1.5 arcsec Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERSTATUS int32 Fiber status mask. 0=good Fiber status mask. 0=good FIBERTOTFLUX_G float32 nanomaggy Predicted total g flux within diam 1.5 arcsec Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBERTOTFLUX_R float32 nanomaggy Predicted total r flux within diam 1.5 arcsec Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBERTOTFLUX_W1 float32 nanomaggy Predicted total W1 flux within diam 1.5 arcsec Predicted WISE W1-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBERTOTFLUX_W2 float32 nanomaggy Predicted total W2 flux within diam 1.5 arcsec Predicted WISE W2-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBERTOTFLUX_Z float32 nanomaggy Predicted total z flux within diam 1.5 arcsec Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBER_DEC float64 deg DEC of actual fiber position DEC of actual fiber position FIBER_RA float64 deg RA of actual fiber position RA of actual fiber position FIBER_X float64 mm CS5 X location requested by PlateMaker CS5 X location requested by PlateMaker FIBER_Y float64 mm CS5 Y location requested by PlateMaker CS5 Y location requested by PlateMaker FIRSTNIGHT int32 Calendar Date of the first exposure KPNO Calendar Date when the first exposure was obtained (regardless of data quality) FLUX_G float32 nanomaggy Flux in the Legacy Survey g-band (AB) Flux in the Legacy Survey g-band (AB) FLUX_G_DERED float32 nanomaggy FLUX_G corrected for Galactic extinction (AB) Flux in the g-band after correcting for Galactic extinction (AB system) FLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of FLUX_G (AB) Inverse variance of FLUX_G (AB) FLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of FLUX_R (AB) Inverse variance of FLUX_R (AB) FLUX_IVAR_W1 float32 nanomaggy^-2 Inverse variance of FLUX_W1 (AB) Inverse variance of FLUX_W1 (AB) FLUX_IVAR_W2 float32 nanomaggy^-2 Inverse variance of FLUX_W2 (AB) Inverse variance of FLUX_W2 (AB) FLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of FLUX_Z (AB) Inverse variance of FLUX_Z (AB) FLUX_R float32 nanomaggy Flux in the Legacy Survey r-band (AB) Flux in the Legacy Survey r-band (AB) FLUX_R_DERED float32 nanomaggy FLUX_R corrected for Galactic extinction (AB) Flux in the r-band after correcting for Galactic extinction (AB system) FLUX_W1 float32 nanomaggy WISE flux in W1 (AB) WISE flux in W1 (AB) FLUX_W1_DERED float32 nanomaggy FLUX_W1 corrected for Galactic extinction (AB) Flux in the WISE W1-band after correcting for Galactic extinction (AB system) FLUX_W2 float32 nanomaggy WISE flux in W2 (AB) WISE flux in W2 (AB) FLUX_W2_DERED float32 nanomaggy FLUX_W2 corrected for Galactic extinction (AB) Flux in the WISE W2-band after correcting for Galactic extinction (AB system) FLUX_Z float32 nanomaggy Flux in the Legacy Survey z-band (AB) Flux in the Legacy Survey z-band (AB) FLUX_Z_DERED float32 nanomaggy FLUX_Z corrected for Galactic extinction (AB) Flux in the z-band after correcting for Galactic extinction (AB system) FRACZ_TILELOCID float64 Frac of targets obs at TILELOCID given class The fraction of targets of this type at this TILELOCID that received an observation (after forcing each target to a unique TILELOCID) FRAC_TLOBS_TILES float64 Fraction of targets with the same TILES value that contribute to FRACZ_TILELOCID Fraction of targets with the same TILES value that contribute to FRACZ_TILELOCID GAIA_ASTROMETRIC_EXCESS_NOISE float32 Gaia astrometric excess noise Gaia astrometric excess noise GAIA_ASTROMETRIC_PARAMS_SOLVED int64 Astrometric params estimated for a Gaia source which astrometric parameters were estimated for a Gaia source GAIA_ASTROMETRIC_SIGMA5D_MAX float32 mas Gaia semi-major axis of 5-d error ellipsoid Gaia longest semi-major axis of the 5-d error ellipsoid GAIA_DEC float64 deg Gaia ICRS declination Gaia ICRS declination GAIA_DUPLICATED_SOURCE bool Gaia duplicated source flag Gaia duplicated source flag GAIA_PHOT_BP_MEAN_FLUX_OVER_ERROR float32 Gaia BP band signal-to-noise Gaia BP band signal-to-noise GAIA_PHOT_BP_MEAN_MAG float32 mag Gaia BP band magnitude Gaia BP band magnitude GAIA_PHOT_BP_N_OBS int32 Gaia BP band number of observations Gaia BP band number of observations GAIA_PHOT_BP_RP_EXCESS_FACTOR float32 Gaia BP/RP excess factor Gaia BP/RP excess factor GAIA_PHOT_G_MEAN_FLUX_OVER_ERROR float32 Gaia G band signal-to-noise Gaia G band signal-to-noise GAIA_PHOT_G_MEAN_MAG float32 mag Gaia G band magnitude Gaia G band magnitude GAIA_PHOT_G_N_OBS int32 Gaia G band number of observations Gaia G band number of observations GAIA_PHOT_RP_MEAN_FLUX_OVER_ERROR float32 Gaia RP band signal-to-noise Gaia RP band signal-to-noise GAIA_PHOT_RP_MEAN_MAG float32 mag Gaia RP band magnitude Gaia RP band magnitude GAIA_PHOT_RP_N_OBS int32 Gaia RP band number of observations Gaia RP band number of observations GAIA_RA float64 deg Gaia ICRS right ascension Gaia ICRS right ascension GALDEPTH_G float32 nanomaggy^-2 Galaxy model-based depth in LS g-band Galaxy model-based depth in LS g-band GALDEPTH_R float32 nanomaggy^-2 Galaxy model-based depth in LS r-band Galaxy model-based depth in LS r-band GALDEPTH_Z float32 nanomaggy^-2 Galaxy model-based depth in LS z-band Galaxy model-based depth in LS z-band GOODHARDLOC bool True/False whether the fiber had good hardware True/False whether the fiber had good hardware GOODPRI bool True if assigned priority <= base priority True/False whether the priority of what was assigned to the location was <= the base priority of the given target class GOODTSNR bool True if TSNR_ above minimum threshold True/False whether the TSNR_ value used was above the minimum threshold for the given target class HALPHA float32 Intensity of Halpha emission at FWHM of 6 minutes Intensity of Halpha emission at FWHM of 6 minutes (from Finkbeiner - ApJS 146 2003 - 407) HALPHA_CHI2 float32 Reduced chi2 of the fit for the HALPHA line Reduced chi2 of the fit for the HALPHA line HALPHA_CONT float32 10**-17 erg/(s cm2 Angstrom) Continuum for HALPHA line fitting (constant) Continuum used for the fitting (fixed value) for the HALPHA line HALPHA_CONT_IVAR float32 10**+34 (s2 cm4 Angstrom2) / erg2 Inverse variance of HALPHA line continuum Inverse variance of the continuum for the HALPHA line HALPHA_ERROR float32 Intensity error of Halpha emission at FWHM of 6’ Intensity error of Halpha emission at FWHM of 6’ (from Finkbeiner - ApJS 146 – 2003 - 407) HALPHA_EW float32 Angstrom Fitted HALPHA line rest-frame equivalent width Fitted rest-frame equivalent width for the HALPHA line HALPHA_EW_IVAR float32 Angstrom^-2 Inverse variance of fitted HALPHA_EW Inverse variance of the fitted rest-frame equivalent width for the HALPHA line HALPHA_FLUX float32 10**-17 erg/(s cm2) Fitted flux for the HALPHA line Fitted flux for the HALPHA line HALPHA_FLUX_IVAR float32 10**+34 (s2 cm4) / erg2 Inverse variance of fitted HALPHA line flux Inverse variance of the fitted flux for the HALPHA line HALPHA_NDOF int32 Number of deg of freedom for HALPHA line fit Number of degrees of freedom of the fit for the HALPHA line HALPHA_SHARE float32 NaN (SHARE not relevant for HALPHA line) NaN (SHARE not relevant for HALPHA line) HALPHA_SHARE_IVAR float32 NaN (SHARE not relevant for HALPHA line) NaN (SHARE not relevant for HALPHA line) HALPHA_SIGMA float32 Angstrom Fitted HALPHA line width in the observed frame Fitted line width (in the observed frame) for the HALPHA line HALPHA_SIGMA_IVAR float32 Angstrom^-2 Inverse variance of HALPHA_SIGMA (obs frame) Inverse variance of the fitted line width (in the observed frame) for the HALPHA line HBETA_CHI2 float32 Reduced chi2 of the fit for the HBETA line Reduced chi2 of the fit for the HBETA line HBETA_CONT float32 10**-17 erg/(s cm2 Angstrom) Continuum for HBETA line fitting (constant) Continuum used for the fitting (fixed value) for the HBETA line HBETA_CONT_IVAR float32 10**+34 (s2 cm4 Angstrom2) / erg2 Inverse variance of HBETA line continuum Inverse variance of the continuum for the HBETA line HBETA_EW float32 Angstrom Fitted HBETA line rest-frame equivalent width Fitted rest-frame equivalent width for the HBETA line HBETA_EW_IVAR float32 Angstrom^-2 Inverse variance of HBETA_EW (rest frame) Inverse variance of the fitted rest-frame equivalent width for the HBETA line HBETA_FLUX float32 10**-17 erg/(s cm2) Fitted flux for the HBETA line Fitted flux for the HBETA line HBETA_FLUX_IVAR float32 10**+34 (s2 cm4) / erg2 Inverse variance of fitted HBETA line flux Inverse variance of the fitted flux for the HBETA line HBETA_NDOF int32 Number of deg of freedom for HBETA line fit Number of degrees of freedom of the fit for the HBETA line HBETA_SHARE float32 NaN (SHARE not relevant for HBETA line) NaN (SHARE not relevant for HBETA line) HBETA_SHARE_IVAR float32 NaN (SHARE not relevant for HBETA line) NaN (SHARE not relevant for HBETA line) HBETA_SIGMA float32 Angstrom Fitted HBETA line width in the observed frame Fitted line width (in the observed frame) for the HBETA line HBETA_SIGMA_IVAR float32 Angstrom^-2 Inverse variance of HBETA_SIGMA (obs frame) Inverse variance of the fitted line width (in the observed frame) for the HBETA line HDELTA_CHI2 float32 Reduced chi2 of the fit for the HDELTA line Reduced chi2 of the fit for the HDELTA line HDELTA_CONT float32 10**-17 erg/(s cm2 Angstrom) Continuum for HDELTA line fitting (constant) Continuum used for the fitting (fixed value) for the HDELTA line HDELTA_CONT_IVAR float32 10**+34 (s2 cm4 Angstrom2) / erg2 Inverse variance of the HDELTA line continuum Inverse variance of the continuum for the HDELTA line HDELTA_EW float32 Angstrom Fitted HDELTA line rest-frame equivalent width Fitted rest-frame equivalent width for the HDELTA line HDELTA_EW_IVAR float32 Angstrom^-2 Inverse variance of HDELTA_EW (rest frame) Inverse variance of the fitted rest-frame equivalent width for the HDELTA line HDELTA_FLUX float32 10**-17 erg/(s cm2) Fitted flux for the HDELTA line Fitted flux for the HDELTA line HDELTA_FLUX_IVAR float32 10**+34 (s2 cm4) / erg2 Inverse variance of fitted HDELTA line flux Inverse variance of the fitted flux for the HDELTA line HDELTA_NDOF int32 Number of deg of freedom of HDELTA line fit Number of degrees of freedom of the fit for the HDELTA line HDELTA_SHARE float32 NaN (SHARE not relevant for HDELTA line) NaN (SHARE not relevant for HDELTA line) HDELTA_SHARE_IVAR float32 NaN (SHARE not relevant for HDELTA line) NaN (SHARE not relevant for HDELTA line) HDELTA_SIGMA float32 Angstrom Fitted HDELTA line width in the observed frame Fitted line width (in the observed frame) for the HDELTA line HDELTA_SIGMA_IVAR float32 Angstrom^-2 Inverse variance of HDELTA_SIGMA (obs frame) Inverse variance of the fitted line width (in the observed frame) for the HDELTA line HEALPIX int32 HEALPixel at this location (NSIDE=64; NESTED) HEALPixel containing this location at NSIDE=64 in the NESTED scheme HGAMMA_CHI2 float32 Reduced chi2 of the fit for the HGAMMA line Reduced chi2 of the fit for the HGAMMA line HGAMMA_CONT float32 10**-17 erg/(s cm2 Angstrom) Continuum for HGAMMA line fitting (constant) Continuum used for the fitting (fixed value) for the HGAMMA line HGAMMA_CONT_IVAR float32 10**+34 (s2 cm4 Angstrom2) / erg2 Inverse variance of the HGAMMA line continuum Inverse variance of the continuum for the HGAMMA line HGAMMA_EW float32 Angstrom Fitted HGAMMA line rest-frame equivalent width Fitted rest-frame equivalent width for the HGAMMA line HGAMMA_EW_IVAR float32 Angstrom^-2 Inverse variance of HGAMMA_EW (rest frame) Inverse variance of the fitted rest-frame equivalent width for the HGAMMA line HGAMMA_FLUX float32 10**-17 erg/(s cm2) Fitted flux for the HGAMMA line Fitted flux for the HGAMMA line HGAMMA_FLUX_IVAR float32 10**+34 (s2 cm4) / erg2 Inverse variance of fitted HGAMMA line flux Inverse variance of the fitted flux for the HGAMMA line HGAMMA_NDOF int32 Number of deg of freedom of HGAMMA line fit Number of degrees of freedom of the fit for the HGAMMA line HGAMMA_SHARE float32 NaN (SHARE not relevant for HGAMMA line) NaN (SHARE not relevant for HGAMMA line) HGAMMA_SHARE_IVAR float32 NaN (SHARE not relevant for HGAMMA line) NaN (SHARE not relevant for HGAMMA line) HGAMMA_SIGMA float32 Angstrom Fitted HGAMMA line width in the observed frame Fitted line width (in the observed frame) for the HGAMMA line HGAMMA_SIGMA_IVAR float32 Angstrom^-2 Inverse variance of HGAMMA_SIGMA (obs frame) Inverse variance of the fitted line width (in the observed frame) for the HGAMMA line HI float32 HI column density assembled by combining the Effelsberg-Bonn HI Survey and the third revision of the Galactic All-Sky Survey HI column density assembled by combining the Effelsberg-Bonn HI Survey and the third revision of the Galactic All-Sky Survey (from HI4PI Collaboration - A&A 594 – 2016 - A116) HPXPIXEL int64 HEALPixel at this location (NSIDE=64; NESTED) HEALPixel containing this location at NSIDE=64 in the NESTED scheme IN_COADD_B bool Fiber/exp used in coadd of camera B If True this fiber in this exposure was used in the coadd of camera B IN_COADD_R bool Fiber/exp used in coadd of camera R If True this fiber in this exposure was used in the coadd of camera R IN_COADD_Z bool Fiber/exp used in coadd of camera Z If True this fiber in this exposure was used in the coadd of camera Z IN_DESI int16 Used by fiberassign to create tile; set to 1 Used by fiberassign to make a tile in the DESI footprint; always set to 1 IN_RADIUS float32 arcsec Radius used to set the IN_BRIGHT_OBJECT bit Radius used to set the ``IN_BRIGHT_OBJECT`` bit in the ``DESI_TARGET`` bitmask. IS_QSO_MGII bool True if the object passes the MgII selection Boolean: True if the object passes the MgII selection IS_QSO_QN int16 True if the object passes QuasarNET selection Spectroscopic classification from QuasarNET (1 for a quasar) KAPPA_PLANCK float64 Map of lensing convergence from Planck where values are the mean-field-subtracted minimum-variance estimate from temperature and polarization Map of lensing convergence from Planck where values are the mean-field-subtracted minimum-variance estimate from temperature and polarization (from Planck Collaboration -A&A 641 – 2020 - A8) KCORR_G0P0 float64 g-band k-correction at redshift=0.0 g-band k-correction at redshift=0.0 KCORR_G0P1 float64 g-band k-correction at redshift=0.1 g-band k-correction at redshift=0.1 KCORR_R0P0 float64 r-band k-correction at redshift=0.0 r-band k-correction at redshift=0.0 KCORR_R0P1 float64 r-band k-correction at redshift=0.1 r-band k-correction at redshift=0.1 LAMBDA_REF float32 Angstrom Requested central wavelength for fiber Requested wavelength at which targets should be centered on fibers LASTNIGHT int32 Final night of observation in series of coadds Final night of observation included in a series of coadds LC_FLUX_IVAR_W1 float32[15] nanomaggy^-2 Inverse variance of LC_FLUX_W1 (AB; 0 if N/A) Inverse variance of LC_FLUX_W1 (AB system; defaults to zero for unused entries) LC_FLUX_IVAR_W2 float32[15] nanomaggy^-2 Inverse variance of LC_FLUX_W2 (AB; 0 if N/A) Inverse variance of LC_FLUX_W2 (AB system; defaults to zero for unused entries) LC_FLUX_W1 float32[15] nanomaggy AB FLUX_W1 in up to 15 coadd epochs (0 if N/A) FLUX_W1 in each of up to fifteen unWISE coadd epochs (AB system; defaults to zero for unused entries) LC_FLUX_W2 float32[15] nanomaggy AB FLUX_W2 in up to 15 coadd epochs (0 if N/A) FLUX_W2 in each of up to fifteen unWISE coadd epochs (AB system; defaults to zero for unused entries) LC_MJD_W1 float64[15] MJD_W1 in up to 15 coadd epochs (0 if N/A) MJD_W1 in each of up to fifteen unWISE coadd epochs (defaults to zero for unused entries) LC_MJD_W2 float64[15] MJD_W2 in up to 15 coadd epochs (0 if N/A) MJD_W2 in each of up to fifteen unWISE coadd epochs (defaults to zero for unused entries) LC_NOBS_W1 int16[15] NOBS_W1 in up to 15 unWISE coadd epochs NOBS_W1 in each of up to fifteen unWISE coadd epochs LC_NOBS_W2 int16[15] NOBS_W2 in up to 15 unWISE coadd epochs NOBS_W2 in each of up to fifteen unWISE coadd epochs LOCATION int64 Loc on focal plane PETAL_LOC*1000 + DEVICE_LOC Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC LOCATION_ASSIGNED bool True if assigned for the target in question True/False for assigned/unassigned for the target in question LRG_MASK binary Imaging mask bits relevant to LRG targets Imaging mask bits relevant to LRG targets MAIN_NSPEC int32 Nb of coadded spectra in Main survey for TID Number of coadded spectra for this TARGETID in Main survey MAIN_PRIMARY bool True if primary coadd spectrum in Main survey Boolean flag (True/False) for the primary coadded spectrum in Main survey MASKBITS int16 Bitwise mask from imaging for potential issues Bitwise mask from the imaging indicating potential issue or blending MAX_MJD float64 d MJD of the last exposure in coadded spectrum Maximum value of the Modified Julian Date (when the shutter was open for the last exposure used in the coadded spectrum) MEAN_DELTA_X float32 mm Mean fiber diff (requested - actual CS5 X loc) Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane MEAN_DELTA_Y float32 mm Mean fiber diff (requested - actual CS5 Y loc) Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane MEAN_FIBER_DEC float64 deg Mean (over exposures) DEC of fiber position Mean (over exposures) DEC of actual fiber position MEAN_FIBER_RA float64 deg Mean (over exposures) RA of fiber position Mean (over exposures) RA of actual fiber position MEAN_FIBER_X float32 mm Mean (over exposures) fiber CS5 X loc on FP Mean (over exposures) fiber CS5 X location on focal plane MEAN_FIBER_Y float32 mm Mean (over exposures) fiber CS5 Y loc on FP Mean (over exposures) fiber CS5 Y location on focal plane MEAN_MJD float64 d Mean of MJD of exposures in a coadded spectrum Mean value of the Modified Julian Date (when the shutter was open for exposures used in the coadded spectrum) MEAN_PSF_TO_FIBER_SPECFLUX float32 Mean PSF light fraction within 1.5arcsec fiber Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing MEDIAN_CALIB_COUNT_B float64 Median of calibrated flux in B camera Median of calibrated flux in B camera MEDIAN_CALIB_COUNT_R float64 Median of calibrated flux in R camera Median of calibrated flux in R camera MEDIAN_CALIB_COUNT_Z float64 Median of calibrated flux in Z camera Median of calibrated flux in Z camera MEDIAN_CALIB_SNR_B float64 Median(S/N) of calibrated flux in B camera Median(S/N) of calibrated flux in B camera MEDIAN_CALIB_SNR_R float64 Median(S/N) of calibrated flux in R camera Median(S/N) of calibrated flux in R camera MEDIAN_CALIB_SNR_Z float64 Median(S/N) of calibrated flux in Z camera Median(S/N) of calibrated flux in Z camera MEDIAN_FFLAT_COUNT_B float64 Median of fiber-flatfielded counts in B camera Median of fiber-flatfielded counts in B camera MEDIAN_FFLAT_COUNT_R float64 Median of fiber-flatfielded counts in R camera Median of fiber-flatfielded counts in R camera MEDIAN_FFLAT_COUNT_Z float64 Median of fiber-flatfielded counts in Z camera Median of fiber-flatfielded counts in Z camera MEDIAN_FFLAT_SNR_B float64 Median(S/N) of B cam fiberflatfielded counts Median(S/N) of fiberflatfielded counts in B camera MEDIAN_FFLAT_SNR_R float64 Median(S/N) of R cam fiberflatfielded counts Median(S/N) of fiberflatfielded counts in R camera MEDIAN_FFLAT_SNR_Z float64 Median(S/N) of Z cam fiberflatfielded counts Median(S/N) of fiberflatfielded counts in Z camera MEDIAN_RAW_COUNT_B float64 Median of raw counts in B camera Median of raw counts in B camera MEDIAN_RAW_COUNT_R float64 Median of raw counts in R camera Median of raw counts in R camera MEDIAN_RAW_COUNT_Z float64 Median of raw counts in Z camera Median of raw counts in Z camera MEDIAN_RAW_SNR_B float64 Median(raw signal/noise) in B camera Median(raw signal/noise) in B camera MEDIAN_RAW_SNR_R float64 Median(raw signal/noise) in R camera Median(raw signal/noise) in R camera MEDIAN_RAW_SNR_Z float64 Median(raw signal/noise) in Z camera Median(raw signal/noise) in Z camera MEDIAN_SKYSUB_COUNT_B float64 Median of sky-subtracted counts in B camera Median of sky-subtracted counts in B camera MEDIAN_SKYSUB_COUNT_R float64 Median of sky-subtracted counts in R camera Median of sky-subtracted counts in R camera MEDIAN_SKYSUB_COUNT_Z float64 Median of sky-subtracted counts in Z camera Median of sky-subtracted counts in Z camera MEDIAN_SKYSUB_SNR_B float64 Median(S/N) of sky-subtracted counts in B cam Median(S/N) of sky-subtracted counts in B camera MEDIAN_SKYSUB_SNR_R float64 Median(S/N) of sky-subtracted counts in R cam Median(S/N) of sky-subtracted counts in R camera MEDIAN_SKYSUB_SNR_Z float64 Median(S/N) of sky-subtracted counts in Z cam Median(S/N) of sky-subtracted counts in Z camera MIN_MJD float64 d MJD of the first exposure in coadded spectrum Minimum value of the Modified Julian Date (when the shutter was open for the first exposure used in the coadded spectrum) MJD float64 d Modified Julian Date when shutter open for exp Modified Julian Date when shutter was opened for this exposure MJD_BEGIN float64 d Start of the allowed observing window (MJD) Start of the allowed observing window for this target (Modified Julian Date) MJD_END float64 d End of the allowed observing window (MJD) End of the allowed observing window for this target (Modified Julian Date) MORPHTYPE char[4] Imaging Survey morphological type from Tractor Imaging Surveys morphological type from Tractor MWS_TARGET int64 Milky Way Survey targeting bits Milky Way Survey targeting bits MW_TRANSMISSION_G float32 Milky Way dust transmission in LS g-band Milky Way dust transmission in LS g-band MW_TRANSMISSION_R float32 Milky Way dust transmission in LS r-band Milky Way dust transmission in LS r-band MW_TRANSMISSION_W1 float32 Milky Way dust transmission in WISE W1 Milky Way dust transmission in WISE W1 MW_TRANSMISSION_W2 float32 Milky Way dust transmission in WISE W2 Milky Way dust transmission in WISE W2 MW_TRANSMISSION_W3 float32 Milky Way dust transmission in WISE W3 Milky Way dust transmission in WISE W3 MW_TRANSMISSION_W4 float32 Milky Way dust transmission in WISE W4 Milky Way dust transmission in WISE W4 MW_TRANSMISSION_Z float32 Milky Way dust transmission in LS z-band Milky Way dust transmission in LS z-band NCOEFF int64 Number of Redrock template coefficients Number of Redrock template coefficients NEAR_RADIUS float32 arcsec Radius used to set the NEAR_BRIGHT_OBJECT bit Radius used to set the ``NEAR_BRIGHT_OBJECT`` bit in the ``DESI_TARGET`` bitmask. NIGHT int32 YYYYMMDD date at start of this observing night Night of observation (YYYYMMDD) starting at local noon before observations start NOBS_G int16 Number of images for central pixel in g-band Number of images for central pixel in g-band NOBS_R int16 Number of images for central pixel in r-band Number of images for central pixel in r-band NOBS_Z int16 Number of images for central pixel in z-band Number of images for central pixel in z-band NPIXELS int64 Number of unmasked pixels used in Redrock fit Number of unmasked pixels contributing to the Redrock fit NTILE int64 Number of tiles target was available on Number of tiles target was available on NUMOBS int64 Nb of spectro observations of this given tile Number of spectroscopic observations (on this specific, single tile) NUMOBS_INIT int64 Initial number of observations for target Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS NUMOBS_MORE int64 Number of additional observations needed Number of additional observations needed NUMTARGET int16 Total number of targets covered by positioner Total number of targets that this positioner covered NUM_ITER int64 Number of positioner iterations Number of positioner iterations NX float64 Estimated mean number density given the redshift and number of overlapping tiles (NTILE) Estimated mean number density given the redshift and number of overlapping tiles (NTILE) NZ float64 h^3 Mpc^-3 Comoving number density of tracer at given z The comoving number density of the tracer at the given redshift, assuming complete sample O2C float64 Criterion for strength of OII emission for ELG The criteria for assessing strength of OII emission for ELG observations OBJID int32 Imaging Surveys OBJID on brick (BRICK_OBJID) Imaging Surveys OBJID on that brick (renamed BRICK_OBJID) OBJTYPE char[3] Object type: TGT, SKY, NON, BAD Object type: TGT, SKY, NON, BAD OBSCONDITIONS int32 Bitmask of allowed observing conditions Bitmask of allowed observing conditions OCLAYER char[6] DARK for dark time or BRIGHT for any time Either 'DARK' for dark-time or 'BRIGHT' to observe in either bright- or dark-time OIII_CHI2 float32 Reduced chi2 of the fit for the [OIII] doublet Reduced chi2 of the fit for the [OIII] doublet OIII_CONT float32 10**-17 erg/(s cm2 Angstrom) Continuum for [OIII] doublet fit (constant) Continuum used for the fitting (fixed value) for the [OIII] doublet OIII_CONT_IVAR float32 10**+34 (s2 cm4 Angstrom2) / erg2 Inverse variance of [OIII] doublet continuum Inverse variance of the continuum for the [OIII] doublet OIII_EW float32 Angstrom [OIII] doublet rest-frame equivalent width Fitted rest-frame equivalent width for the [OIII] doublet OIII_EW_IVAR float32 Angstrom^-2 Inverse variance of fitted OIII_EW Inverse variance of the fitted rest-frame equivalent width for the [OIII] doublet OIII_FLUX float32 10**-17 erg/(s cm2) Fitted flux for the [OIII] doublet Fitted flux for the [OIII] doublet OIII_FLUX_IVAR float32 10**+34 (s2 cm4) / erg2 Inverse variance of fitted [OIII] doublet flux Inverse variance of the fitted flux for the [OIII] doublet OIII_NDOF int32 Nb of degrees of freedom of [OIII] doublet fit Number of degrees of freedom of the fit for the [OIII] doublet OIII_SHARE float32 F1/(F0+F1) for [OIII] w/ F0, F1 each line flux F1/(F0+F1) for the [OIII] doublet, where F0 and F1 are the individual line fluxes (SHARE value fixed during the fit) OIII_SHARE_IVAR float32 Infinity because SHARE is fixed during the fit Infinite value, as SHARE is fixed during the fit OIII_SIGMA float32 Angstrom Fitted [OIII] line width in the observed frame Fitted line width (in the observed frame) for the [OIII] doublet OIII_SIGMA_IVAR float32 Angstrom^-2 Inverse variance of OIII_SIGMA (obs frame) Inverse variance of the fitted line width (in the observed frame) for the [OIII] doublet OII_CHI2 float32 Reduced chi2 of the fit for the [OII] doublet Reduced chi2 of the fit for the [OII] doublet OII_CONT float32 10**-17 erg/(s cm2 Angstrom) Continuum for [OII] doublet fit (constant) Continuum used for the fitting (fixed value) for the [OII] doublet OII_CONT_IVAR float32 10**+34 (s2 cm4 Angstrom2) / erg2 Inverse variance of [OII] doublet continuum Inverse variance of the continuum for the [OII] doublet OII_EW float32 Angstrom [OII] doublet rest-frame equivalent width Fitted rest-frame equivalent width for the [OII] doublet OII_EW_IVAR float32 Angstrom^-2 Inverse variance of fitted OII_EW Inverse variance of the fitted rest-frame equivalent width for the [OII] doublet OII_FLUX float32 10**-17 erg/(s cm2) Fitted flux for the [OII] doublet Fitted flux for the [OII] doublet OII_FLUX_IVAR float32 10**+34 (s2 cm4) / erg2 Inverse variance of fitted [OII] doublet flux Inverse variance of the fitted flux for the [OII] doublet OII_NDOF int32 Nb of degrees of freedom of [OII] doublet fit Number of degrees of freedom of the fit for the [OII] doublet OII_SHARE float32 F1/(F0+F1) for [OII] w/ F0, F1 each line flux Fitted F1/(F0+F1) for the [OII] doublet, where F0 and F1 are the individual line fluxes OII_SHARE_IVAR float32 Inverse variance of OII_SHARE value Inverse variance of the fitted F1/(F0+F1) for the [OII] doublet OII_SIGMA float32 Angstrom Fitted [OII] line width in the observed frame Fitted line width (in the observed frame) for the [OII] doublet OII_SIGMA_IVAR float32 Angstrom^-2 Inverse variance of OII_SIGMA (obs frame) Inverse variance of the fitted line width (in the observed frame) for the [OII] doublet PARALLAX float32 mas Reference catalog parallax Reference catalog parallax PARALLAX_IVAR float32 mas^-2 Inverse variance of PARALLAX Inverse variance of PARALLAX PETAL_LOC int16 Petal location [0-9] Petal location [0-9] PHOTSYS char[1] Photom system: N for MzLS/BASS; S for DECaLS 'N' for the MzLS/BASS photometric system, 'S' for DECaLS PLATE_DEC float64 deg Barycentric Declination for PlateMaker (ICRS) Barycentric Declination in ICRS to be used by PlateMaker PLATE_RA float64 deg Barycentric RA for PlateMaker (ICRS) Barycentric Right Ascension in ICRS to be used by PlateMaker PLATE_REF_EPOCH float64 yr Copy of REF_EPOCH for PlateMaker Copy of REF_EPOCH to be used by PlateMaker PMDEC float32 mas yr^-1 Proper motion in the +Dec direction Proper motion in the +Dec direction PMDEC_IVAR float32 yr^2 mas^-2 Inverse variance of PMDEC Inverse variance of PMDEC PMRA float32 mas yr^-1 Proper motion in +RA direction, incl. cos(dec) proper motion in the +RA direction (already including cos(dec)) PMRA_IVAR float32 yr^2 mas^-2 Inverse variance of PMRA Inverse variance of PMRA PRIORITY int32 Target current priority Target current priority PRIORITY_ASSIGNED int32 (only for data) PRIORITY of the target that was assigned to the given FIBER and TILEID (redundant with PRIORITY in the random catalogs) (only for data) PRIORITY of the target that was assigned to the given FIBER and TILEID (redundant with PRIORITY in the random catalogs) PRIORITY_INIT int64 Target initial priority from target selection Target initial priority from target selection bitmasks and OBSCONDITIONS PROBA_RF float32 Probability of being a QSO from Random Forest Probability of being a quasar generated by the quasar Random Forest targeting algorithm. PROB_OBS float64 Probability of assignment in alt histories The number alternative assignment histories that the target was assigned in divided by 128 PROGRAM char[6] DESI program type: BRIGHT, DARK, BACKUP, OTHER DESI program type - BRIGHT, DARK, BACKUP, OTHER PSFDEPTH_G float32 nanomaggy^-2 PSF-based depth in g-band PSF-based depth in g-band PSFDEPTH_R float32 nanomaggy^-2 PSF-based depth in r-band PSF-based depth in r-band PSFDEPTH_W1 float32 nanomaggy^-2 PSF-based depth in WISE W1 PSF-based depth in WISE W1 PSFDEPTH_W2 float32 nanomaggy^-2 PSF-based depth in WISE W2 PSF-based depth in WISE W2 PSFDEPTH_Z float32 nanomaggy^-2 PSF-based depth in z-band PSF-based depth in z-band PSFSIZE_G float32 arcsec Median g-band PSF size of BRICK_PRIMARY objs Median PSF size evaluated at the BRICK_PRIMARY objects in this brick in g-band PSFSIZE_R float32 arcsec Median r-band PSF size of BRICK_PRIMARY objs Median PSF size evaluated at the BRICK_PRIMARY objects in this brick in r-band PSFSIZE_Z float32 arcsec Median z-band PSF size of BRICK_PRIMARY objs Median PSF size evaluated at the BRICK_PRIMARY objects in this brick in z-band PSF_TO_FIBER_SPECFLUX float64 PSF light fraction within fiber (given seeing) fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing QSO_MASKBITS int32 QSO Bitwise mask from imaging for potential issues QSO Bitwise mask from the imaging indicating potential issue or blending RA float64 deg Barycentric Right Ascension in ICRS Barycentric Right Ascension in ICRS RA_IVAR float32 deg^-2 Inv variance of RA; w/o cos(dec) or astrom err Inverse variance of RA (no cosine term!), excluding astrometric calibration errors REF_CAT char[2] Ref catalog (T2=Tycho-2, G2=Gaia DR2, L2=SGA) Reference catalog source for star: 'T2' for Tycho-2, 'G2' for Gaia DR2, 'L2' for the SGA, empty otherwise REF_EPOCH float32 yr Reference epoch for Gaia/Tycho astrometry Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia REF_ID int64 Tyc1*1e6+Tyc2*10+Tyc3 (Tycho); sourceid (Gaia) Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; ``sourceid`` for Gaia DR2 REF_MAG float32 mag Mag for IN_RADIUS: G (Gaia); VT,HP,BT (Tycho) Magnitude used to calculate ``IN_RADIUS``; typically, in order of preference, G-band for Gaia or VT then HP then BT for Tycho. RELEASE int16 Imaging surveys release ID Imaging surveys release ID REST_GMR_0P0 float64 Rest-frame g-r colour at redshift=0.0 Rest-frame g-r colour at redshift=0.0 REST_GMR_0P1 float64 Rest-frame g-r colour at redshift=0.1 Rest-frame g-r colour at redshift=0.1 RMS_DELTA_X float32 mm RMS (over exposures) fiber CS5 X loc on FP RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane RMS_DELTA_Y float32 mm RMS (over exposures) fiber CS5 Y loc on FP RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane ROSETTE_NUMBER int32 Rosette number ID [0-19] Rosette number ID [0-19] ROSETTE_R float64 deg Radius from the rosette center to the target Radius from the center of the rosette to the target SCND_ORDER int32 Nb of row for target entry in secondary file Number of row for target entry in secondary file (placeholder; needed by fiberassign) SCND_TARGET int64 Target select. bitmask for secondary programs Target selection bitmask for secondary programs SEEING_ETC float64 arcsec Average FWHM atm seeing during exposure (ETC) Average FWHM atmospheric seeing during this exposure as measured by ETC SEEING_GFA float64 arcsec Average FWHM atm seeing during exposure (GFA) Average FWHM atmospheric seeing during this exposure as measured by GFA SERSIC float32 Sersic profile power-law index (MORPHTYPE=SER) Power-law index for the Sersic profile model (MORPHTYPE='SER') SERSIC_IVAR float32 Inverse variance of SERSIC Inverse variance of SERSIC SHAPEDEV_E1 float32 deVaucouleurs shape fit ellipticity param e1 deVaucouleurs shape fit ellipticity parameter e1 SHAPEDEV_E1_IVAR float32 Inverse variance of SHAPEDEV_E1 Inverse variance of SHAPEDEV_E1 SHAPEDEV_E2 float32 deVaucouleurs shape fit ellipticity param e2 deVaucouleurs shape fit ellipticity parameter e2 SHAPEDEV_E2_IVAR float32 Inverse variance of SHAPEDEV_E2 Inverse variance of SHAPEDEV_E2 SHAPEDEV_R float32 arcsec deVaucouleurs shape half-light radius deVaucouleurs shape half-light radius SHAPEDEV_R_IVAR float32 arcsec^-2 Inverse variance of SHAPEDEV_R Inverse variance of SHAPEDEV_R SHAPEEXP_E1 float32 Exponential shape fit ellipticity param e1 Imaging exponential shape fit ellipticity parameter e1 SHAPEEXP_E1_IVAR float32 Inverse variance of SHAPEEXP_E1 Inverse variance of SHAPEEXP_E1 SHAPEEXP_E2 float32 Exponential shape fit ellipticity param e2 Imaging exponential shape fit ellipticity parameter e2 SHAPEEXP_E2_IVAR float32 Inverse variance of SHAPEEXP_E2 Inverse variance of SHAPEEXP_E2 SHAPEEXP_R float32 arcsec Imaging exponential shape half-light radius Imaging exponential shape half-light radius SHAPEEXP_R_IVAR float32 arcsec^-2 Inverse variance of SHAPEEXP_R Inverse variance of SHAPEEXP_R SHAPE_E1 float32 Ellipticity param e1 of galaxy model MORPHTYPE Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE SHAPE_E1_IVAR float32 Inverse variance of SHAPE_E1 Inverse variance of SHAPE_E1 SHAPE_E2 float32 Ellipticity param e2 of galaxy model MORPHTYPE Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE SHAPE_E2_IVAR float32 Inverse variance of SHAPE_E2 Inverse variance of SHAPE_E2 SHAPE_R float32 arcsec Half-light radius of galaxy model (>0) Half-light radius of galaxy model (>0) SHAPE_R_IVAR float32 arcsec^-2 Inverse variance of SHAPE_R Inverse variance of SHAPE_R SIGMA_MGII float32 Angstrom Fitted param SIGMA (linewidth) by MgII fitter Fitted parameter SIGMA (linewidth) by MgII fitter (in angstrom?) SKY_MAG_AB_GFA float64 mag arcsec^-2 Sky background in GFA passband Sky background in the GFA passband, measured from the GFA backgrounds. SKY_MAG_G_GFA float64 mag arcsec^-2 Sky background in g passband Sky background measured in the spectroscopy integrated over the DECam g passband, AB mags. SKY_MAG_R_GFA float64 mag arcsec^-2 Sky background in r passband Sky background measured in the spectroscopy integrated over the DECam r passband, AB mags. SKY_MAG_Z_GFA float64 mag arcsec^-2 Sky background in z passband Sky background measured in the spectroscopy integrated over the DECam z passband, AB mags. SPECTRO int16 Spectrograph number [0-9] Spectrograph number [0-9] SPECTROID int32 Hardware ID of spectrograph (not used) Hardware ID of spectrograph (not used) SPECTYPE char[6] Best-fit spectral type: GALAXY, QSO, STAR Spectral type of Redrock best fit template (e.g. GALAXY, QSO, STAR) SPGRPVAL int32 Value by which spectra are grouped for a coadd Value by which spectra are grouped for a coadd (e.g. a YEARMMDD night) STARDENS float32 Density (deg-2) of stars in the position from Gaia limited to point-like sources in the range 12 < G < 17 Density (deg-2) of stars in the position from Gaia limited to point-like sources in the range 12 < G < 17 calculated using the desitarget randoms.stellar_density function STD_FIBER_DEC float32 arcsec Std deviation (over exposures) of fiber DEC Standard deviation (over exposures) of DEC of actual fiber position STD_FIBER_RA float32 arcsec Std deviation (over exposures) of fiber RA Standard deviation (over exposures) of RA of actual fiber position SUBPRIORITY float64 Random subpriority [0-1) to break assign ties Random subpriority [0-1) to break assignment ties SUBTYPE char[20] Spectral subtype Spectral subtype SUM_CALIB_COUNT_B float64 Sum of calibrated flux in B camera Sum of calibrated flux in B camera SUM_CALIB_COUNT_R float64 Sum of calibrated flux in R camera Sum of calibrated flux in R camera SUM_CALIB_COUNT_Z float64 Sum of calibrated flux in Z camera Sum of calibrated flux in Z camera SUM_FFLAT_COUNT_B float64 Sum of fiber-flatfielded counts B camera Sum of fiber-flatfielded counts B camera SUM_FFLAT_COUNT_R float64 Sum of fiber-flatfielded counts R camera Sum of fiber-flatfielded counts R camera SUM_FFLAT_COUNT_Z float64 Sum of fiber-flatfielded counts Z camera Sum of fiber-flatfielded counts Z camera SUM_RAW_COUNT_B float64 Sum of raw counts in B camera Sum of raw counts in B camera SUM_RAW_COUNT_R float64 Sum of raw counts in R camera Sum of raw counts in R camera SUM_RAW_COUNT_Z float64 Sum of raw counts in Z camera Sum of raw counts in Z camera SUM_SKYSUB_COUNT_B float64 Sum of sky-subtracted counts in B camera Sum of sky-subtracted counts in B camera SUM_SKYSUB_COUNT_R float64 Sum of sky-subtracted counts in R camera Sum of sky-subtracted counts in R camera SUM_SKYSUB_COUNT_Z float64 Sum of sky-subtracted counts in Z camera Sum of sky-subtracted counts in Z camera SURVEY char[7] Survey name Survey name: cmx, sv1, sv2, sv3, main SV1_BGS_TARGET int64 BGS (bright time) target sel bitmask for SV1 BGS (bright time program) target selection bitmask for SV1 SV1_DESI_TARGET int64 DESI (dark time) target sel bitmask for SV1 DESI (dark time program) target selection bitmask for SV1 SV1_MWS_TARGET int64 MWS (bright time) target sel bitmask for SV1 MWS (bright time program) target selection bitmask for SV1 SV1_SCND_TARGET int64 Secondary target selection bitmask for SV1 Secondary target selection bitmask for SV1 SV2_BGS_TARGET int64 BGS (bright time) target sel bitmask for SV2 BGS (bright time program) target selection bitmask for SV2 SV2_DESI_TARGET int64 DESI (dark time) target sel bitmask for SV2 DESI (dark time program) target selection bitmask for SV2 SV2_MWS_TARGET int64 MWS (bright time) target sel bitmask for SV2 MWS (bright time program) target selection bitmask for SV2 SV2_SCND_TARGET int64 Secondary target selection bitmask for SV2 Secondary target selection bitmask for SV2 SV3_BGS_TARGET int64 BGS (bright time) target sel bitmask for SV3 BGS (bright time program) target selection bitmask for SV3 SV3_DESI_TARGET int64 DESI (dark time) target sel bitmask for SV3 DESI (dark time program) target selection bitmask for SV3 SV3_MWS_TARGET int64 MWS (bright time) target sel bitmask for SV3 MWS (bright time program) target selection bitmask for SV3 SV3_SCND_TARGET int64 Secondary target selection bitmask for SV3 Secondary target selection bitmask for SV3 SV_NSPEC int32 Number of coadded spectra in SV (SV1+2+3) Number of coadded spectra for this TARGETID in SV (SV1+2+3) SV_PRIMARY bool True if primary coadded spectrum in SV(1+2+3) Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3) TARGETID int64 Unique DESI target ID Unique DESI target ID TARGETID_DATA int64 For randoms and mocks: Unique DESI target ID of associated TILELOCID For randoms and mocks: Unique DESI target ID of associated TILELOCID TARGET_DEC float64 deg Barycentric declination in ICRS Barycentric declination in ICRS TARGET_RA float64 deg Barycentric right ascension in ICRS Barycentric right ascension in ICRS TARGET_STATE char[*] Combination of target class+current obs state Combination of target class and its current observational state TILEDEC float64 deg Barycentric declination of tile center in ICRS Barycentric declination of tile center in ICRS TILEID int32 Unique DESI tile ID Unique DESI tile ID TILELOCID int64 Is 10000*TILEID+LOCATION Is 10000*TILEID+LOCATION TILELOCIDS char[*] Available TILELOCIDs for a target joint by '-' TILELOCIDs that the target was available for, separated by '-' TILELOCID_ASSIGNED int64 1 if the TILELOCID is assigned (0=unassigned) 0/1 for unassigned/assigned for TILELOCID in question (it could have been assigned to a different target) TILERA float64 deg Barycentric R.A. of tile center in ICRS Barycentric Right Ascension of tile center in ICRS TILES char[*] Available TILEIDs for a target joined by '-' TILEIDs of those tile, in string form separated by '-' TIMESTAMP str s UTC/ISO time when the target state was updated UTC/ISO time at which the target state was updated TOOID int64 ID for this target assigned by the CHECKER ID for this target assigned by the ``CHECKER`` TOO_PRIO char[2] High-priority (HI) or low-priority (LO) target Either 'HI' for a very-high-priority target or 'LO' for a very-low-priority target TOO_TYPE char[5] Type: TILE=special tile; FIBER=fiber-override Either 'TILE' for a special tile or 'FIBER' for a fiber-override ToO TSNR2_BGS float32 BGS template (S/N)^2 summed over B,R,Z BGS template (S/N)^2 summed over B,R,Z TSNR2_BGS_B float32 BGS B template (S/N)^2 BGS B template (S/N)^2 TSNR2_BGS_R float32 BGS R template (S/N)^2 BGS R template (S/N)^2 TSNR2_BGS_Z float32 BGS Z template (S/N)^2 BGS Z template (S/N)^2 TSNR2_ELG float32 ELG template (S/N)^2 summed over B,R,Z ELG template (S/N)^2 summed over B,R,Z TSNR2_ELG_B float32 ELG B template (S/N)^2 ELG B template (S/N)^2 TSNR2_ELG_R float32 ELG R template (S/N)^2 ELG R template (S/N)^2 TSNR2_ELG_Z float32 ELG Z template (S/N)^2 ELG Z template (S/N)^2 TSNR2_GPBBACKUP float64 Template (S/N)^2 for backup targets in BPB template (S/N)^2 for backup targets in guider pass band TSNR2_GPBBACKUP_B float64 Template (S/N)^2 for backup targets in GPB (B) template (S/N)^2 for backup targets in guider pass band on B TSNR2_GPBBACKUP_R float64 Template (S/N)^2 for backup targets in GPB (R) template (S/N)^2 for backup targets in guider pass band on R TSNR2_GPBBACKUP_Z float64 Template (S/N)^2 for backup targets in GPB (Z) template (S/N)^2 for backup targets in guider pass band on Z TSNR2_GPBBRIGHT float64 Template (S/N)^2 for bright targets in BPB template (S/N)^2 for bright targets in guider pass band TSNR2_GPBBRIGHT_B float64 Template (S/N)^2 for bright targets in BPB (B) template (S/N)^2 for bright targets in guider pass band on B TSNR2_GPBBRIGHT_R float64 Template (S/N)^2 for bright targets in BPB (R) template (S/N)^2 for bright targets in guider pass band on R TSNR2_GPBBRIGHT_Z float64 Template (S/N)^2 for bright targets in BPB (Z) template (S/N)^2 for bright targets in guider pass band on Z TSNR2_GPBDARK float64 Template (S/N)^2 for dark targets in BPB template (S/N)^2 for dark targets in guider pass band TSNR2_GPBDARK_B float64 Template (S/N)^2 for dark targets in BPB (B) template (S/N)^2 for dark targets in guider pass band on B TSNR2_GPBDARK_R float64 Template (S/N)^2 for dark targets in BPB (R) template (S/N)^2 for dark targets in guider pass band on R TSNR2_GPBDARK_Z float64 Template (S/N)^2 for dark targets in BPB (Z) template (S/N)^2 for dark targets in guider pass band on Z TSNR2_LRG float32 LRG template (S/N)^2 summed over B,R,Z LRG template (S/N)^2 summed over B,R,Z TSNR2_LRG_B float32 LRG B template (S/N)^2 LRG B template (S/N)^2 TSNR2_LRG_R float32 LRG R template (S/N)^2 LRG R template (S/N)^2 TSNR2_LRG_Z float32 LRG Z template (S/N)^2 LRG Z template (S/N)^2 TSNR2_LYA float32 LYA template (S/N)^2 summed over B,R,Z LYA template (S/N)^2 summed over B,R,Z TSNR2_LYA_B float32 LYA B template (S/N)^2 LYA B template (S/N)^2 TSNR2_LYA_R float32 LYA R template (S/N)^2 LYA R template (S/N)^2 TSNR2_LYA_Z float32 LYA Z template (S/N)^2 LYA Z template (S/N)^2 TSNR2_QSO float32 QSO template (S/N)^2 summed over B,R,Z QSO template (S/N)^2 summed over B,R,Z TSNR2_QSO_B float32 QSO B template (S/N)^2 QSO B template (S/N)^2 TSNR2_QSO_R float32 QSO R template (S/N)^2 QSO R template (S/N)^2 TSNR2_QSO_Z float32 QSO Z template (S/N)^2 QSO Z template (S/N)^2 TYPE char[4] Tractor morphological model type (MORPHTYPE) Morphological Model type from Tractor; renamed MORPHTYPE in most files URAT_ID int64 ID in URAT catalog if applicable (ex: no Gaia) ID in the URAT catalog for sources where URAT supplemented missing Gaia astrometric information URAT_SEP float32 arcsec Separation b/w URAT and Gaia sources, if appl. Separation between URAT and Gaia sources where URAT supplemented missing Gaia astrometric information VAR_A_MGII float32 Variance of MgII fit amplitude parameter A Variance of MgII fit amplitude parameter A VAR_B_MGII float32 Variance of MgII fit offset parameter B Variance of MgII fit offset parameter B VAR_SIGMA_MGII float32 Variance of MgII fit width parameter sigma Variance of MgII fit width parameter sigma VERSION char[14] Tag of desitarget used to make target catalog Tag of desitarget used to create the target catalog WEIGHT float64 The combination of all weights to use The combination of all weights to use WEIGHT_COMP float64 1/FRACZ_TILELOCID 1/FRACZ_TILELOCID WEIGHT_FKP float64 1/(1+NZ*P0), with P0 different for each tracer 1/(1+NZ*P0), with P0 different for each tracer WEIGHT_FKP_NTILE float64 Mean FKP weights as a function of the number of overlapping tiles in the PIP version LSS catalogs Mean FKP weights as a function of the number of overlapping tiles in the PIP version LSS catalogs (to be used in the angular pair-counts used for angular up-weighting) WEIGHT_IMLIN float64 Imaging systematics weights derived with the eBOSS linear regression method Imaging systematics weights derived with the eBOSS linear regression method WEIGHT_NTILE float64 Effective weight as a function of the number of overlapping tiles in the PIP version LSS catalogs Effective weight as a function of the number of overlapping tiles in the PIP version LSS catalogs (to be used in the angular pair-counts used for angular up-weighting) WEIGHT_RF float64 Imaging systematics weights derived with the regressis random forest regression method Imaging systematics weights derived with the regressis random forest regression method WEIGHT_SN float64 Imaging systematics weights derived with the sysnet NN regression method Imaging systematics weights derived with the sysnet NN regression method WEIGHT_SYS float64 Correction for imaging conditions; RF method Correction for fluctuations in projected density with imaging conditions, from random forrest method WEIGHT_SYSEB float64 Corr for imaging conditions; eBOSS lin regress Correction for fluctuations in projected density with imaging conditions, from linear regression method applied to eBOSS WEIGHT_ZFAIL float64 Should be all 1 at this point for main survey Should be all 1 at this point for main survey WISEMASK_W1 byte Bitwise mask for WISE W1 data Bitwise mask for WISE W1 data WISEMASK_W2 byte Bitwise mask for WISE W2 data Bitwise mask for WISE W2 data Z float64 Redshift measured by Redrock Redshift measured by Redrock ZCAT_NSPEC int32 Nb of coadded spectra for TARGETID in catalog Number of times this TARGETID appears in this catalog ZCAT_PRIMARY bool True if primary coadded spectrum in catalog Boolean flag (True/False) for the primary coadded spectrum in this zcatalog ZERR float64 Redshift error from redrock Redshift error from redrock ZPOSSLOC bool Whether location is possible for target class True/False whether the location could have been assigned to the given target class ZTILEID int32 ID of latest tile that updated target state ID of tile that most recently updated target's state ZWARN int64 Redshift warning bitmask from Redrock Redshift warning bitmask from Redrock ZWARN_MTL int64 ZWARN from the zmtl file (contains extra bits) The ZWARN from the zmtl file (contains extra bits) Z_CIII float64 Redshift estimated by QuasarNET with CIII line Redshift estimated by QuasarNET with CIII line Z_CIV float64 Redshift estimated by QuasarNET with CIV line Redshift estimated by QuasarNET with CIV line Z_HP float64 Redshift from Healpix coadd Redshift from Healpix coadd Z_Halpha float64 Redshift estimated by QuasarNET w\ Halpha line Redshift estimated by QuasarNET with Halpha line Z_Hbeta float64 Redshift estimated by QuasarNET w\ Hbeta line Redshift estimated by QuasarNET with Hbeta line Z_LYA float64 Redshift estimated by QuasarNET with LyA line Redshift estimated by QuasarNET with LyA line Z_MgII float64 Redshift estimated by QuasarNET with MgII line Redshift estimated by QuasarNET with MgII line Z_QN float64 Redshift by QuasarNET; highest confidence line Redshift measured by QuasarNET using line with highest confidence Z_QN_CONF float64 Redshift confidence from QuasarNET Redshift confidence from QuasarNET Z_RR float64 Redshift collected from redrock file Redshift collected from redrock file Z_not4clus float64 Redshift that eventually gets propagated as Z to the clustering catalogs (the ‘_not4clus’ aids in the blinding process) Redshift that eventually gets propagated as Z to the clustering catalogs (the ‘_not4clus’ aids in the blinding process) mod_success_rate float64 Expected spectroscopic success rate given the target and observation properties Expected spectroscopic success rate given the target and observation properties ================================= =========== ================================= ==================================================================================================================================================================================== ===============================================================================================================================================================================================================================================