vac/ : Value Added Catalogs
$DESI_ROOT : represents the top level of the DESI directory tree.
$DESI_SPECTRO_DATA : raw data
$DESI_SPECTRO_REDUX : processed spectro data
- $DESI_SPECTRO_REDUX/$SPECPROD
$DESI_SPECTRO_SIM : simulated spectro data
$DESI_SPECTRO_CALIB : spectro calibration data
$DESI_SURVEYOPS : data files used for day-to-day survey operations
$DESI_TARGET : target selection and fiber assignment (see also Myers et al. 2023)
$DESIMODEL : data used for simulating DESI
$DESISURVEY_OUTPUT : outputs from desisurvey and surveysim
$PROTODESI : data and logs from the ProtoDESI campaign

Bit Masks in DESI
Standard Column Descriptions
Environment variables
Units in data files

Contributing to desidatamodel
desidatamodel API
desidatamodel Change Log

desidatamodel

DESI_ROOT
DESI_SPECTRO_REDUX
SPECPROD
healpix
SURVEY
PROGRAM
PIXGROUP
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PIXGROUP

Pixels are grouped by subdirectories of PIXGROUP = PIXNUM//100 to avoid having tens of thousands of directories at the same level.

PIXNUM

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