biasnighttest-CAMERA-NIGHT.fits

Summary:

The biasnight code first writes these files and then tests if they are better than the default biases. If they are better, they are renamed to the final biasnight-*.fits.gz; if they aren’t better, they are left behind for comparison but not otherwise used by the pipeline.

Naming Convention:

biasnighttest-CAMERA-NIGHT.fits.gz, where CAMERA is e.g., “b0”, “r5”, etc. and NIGHT is the observation night in YYYYMMDD format.

Regex:

biasnighttest-[brz][0-9]-[0-9]{8}\.fits\.gz

File Type:

FITS, 30 MB

Contents

Number	EXTNAME	Type	Contents
HDU0	BIAS	IMAGE	bias image

FITS Header Units

HDU0

EXTNAME = BIAS

2D image with the master bias to subtract to the raw images of the night.

Required Header Keywords

Required Header Keywords table

KEY	Example Value	Type	Comment
NAXIS1	4232	int
NAXIS2	4162	int
TELESCOP	KPNO 4.0-m telescope	str	Telescope name
INSTRUME	DESI	str	Instrument name
SPECGRPH	1	int	Spectrograph logical name (SP)
SPECID	10	int	Spectrograph serial number (SM)
DETECTOR	sn22822	str	Detector (ccd) identification
CAMERA	b1	str	Camera name
CCDNAME	CCDSM10B	str	CCD name
CCDPREP	purge,clear	str	CCD prep actions
CCDSIZE	4162,4232	str	CCD size in pixels (rows, columns)
CCDTEMP	850.0	float	[deg C] CCD controller CCD temperature
CPUTEMP	59.209	float	[deg C] CCD controller CPU temperature
CASETEMP	58.9529	float	[deg C] CCD controller case temperature
CCDTMING	flatdark_sta_timing.txt	str	CCD timing file
CCDCFG	CMV_22805_sta_revd_tuned-may2018_20210128.cfg	str	CCD configuration fi
SETTINGS	detectors_sm_20210128.json	str	Name of DESI CCD settings file
VESSEL	29	int	Cryostat serial number
FEEVER	v20160312	str	CCD Controller version
FEEBOX	lbnl088	str	CCD Controller serial number
PRESECA	[1:4, 2:2049]	str	Prescan section for quadrant A
PRRSECA	[5:2052, 1:1]	str	Row prescan section for quadrant A
DATASECA	[5:2052, 2:2049]	str	Data section for quadrant A
TRIMSECA	[5:2052, 2:2049]	str	Trim section for quadrant A
BIASSECA	[2053:2116, 2:2049]	str	Bias section for quadrant A
ORSECA	[5:2052, 2050:2081]	str	Row overscan section for quadrant A
CCDSECA	[1:2048, 1:2048]	str	CCD section for quadrant A
DETSECA	[1:2048, 1:2048]	str	Detector section for quadrant A
AMPSECA	[1:2048, 1:2048]	str	AMP section for quadrant A
PRESECB	[4229:4232, 2:2049]	str	Prescan section for quadrant B
PRRSECB	[2181:4228, 1:1]	str	Row prescan section for quadrant B
DATASECB	[2181:4228, 2:2049]	str	Data section for quadrant B
TRIMSECB	[2181:4228, 2:2049]	str	Trim section for quadrant B
BIASSECB	[2117:2180, 2:2049]	str	Bias section for quadrant B
ORSECB	[2181:4228, 2050:2081]	str	Row overscan section for quadrant B
CCDSECB	[2049:4096, 1:2048]	str	CCD section for quadrant B
DETSECB	[2049:4096, 1:2048]	str	Detector section for quadrant B
AMPSECB	[2049:4096, 2048:1]	str	AMP section for quadrant B
PRESECC	[1:4, 2114:4161]	str	Prescan section for quadrant C
PRRSECC	[5:2052, 4162:4162]	str	Row prescan section for quadrant C
DATASECC	[5:2052, 2114:4161]	str	Data section for quadrant C
TRIMSECC	[5:2052, 2114:4161]	str	Trim section for quadrant C
BIASSECC	[2053:2116, 2114:4161]	str	Bias section for quadrant C
ORSECC	[5:2052, 2082:2113]	str	Row overscan section for quadrant C
CCDSECC	[1:2048, 2049:4096]	str	CCD section for quadrant C
DETSECC	[1:2048, 2049:4096]	str	Detector section for quadrant C
AMPSECC	[2048:1, 2049:4096]	str	AMP section for quadrant C
PRESECD	[4229:4232, 2114:4161]	str	Prescan section for quadrant D
PRRSECD	[2181:4228, 4162:4162]	str	Row prescan section for quadrant D
DATASECD	[2181:4228, 2114:4161]	str	Data section for quadrant D
TRIMSECD	[2181:4228, 2114:4161]	str	Trim section for quadrant D
BIASSECD	[2117:2180, 2114:4161]	str	Bias section for quadrant D
ORSECD	[2181:4228, 2082:2113]	str	Row bias section for quadrant D
CCDSECD	[2049:4096, 2049:4096]	str	CCD section for quadrant D
DETSECD	[2049:4096, 2049:4096]	str	Detector section for quadrant D
AMPSECD	[4096:2049, 4096:2049]	str	AMP section for quadrant D
DAC0	15.9998,15.9547	str	[V] set value, measured value
DAC1	15.9998,15.759	str	[V] set value, measured value
DAC2	15.9998,15.8105	str	[V] set value, measured value
DAC3	15.9998,15.9238	str	[V] set value, measured value
DAC4	0.0,-0.0158	str	[V] set value, measured value
DAC5	0.0,-0.021	str	[V] set value, measured value
DAC6	0.0,-0.0158	str	[V] set value, measured value
DAC7	0.0,-0.021	str	[V] set value, measured value
DAC8	26.9998,27.0088	str	[V] set value, measured value
DAC9	26.9998,27.0385	str	[V] set value, measured value
DAC10	26.9998,27.0978	str	[V] set value, measured value
DAC11	26.9998,26.5042	str	[V] set value, measured value
DAC12	0.0,5.0752	str	[V] set value, measured value
DAC13	0.0,-5.0232	str	[V] set value, measured value
DAC14	0.0,0.8008	str	[V] set value, measured value
DAC15	19.9997,19.8328	str	[V] set value, measured value
DAC16	0.0,0.1386	str	[V] set value, measured value
DAC17	-0.0,0.0732	str	[V] set value, measured value
CLOCK0	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK1	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK2	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK3	6.9999,-2.0001	str	[V] high rail, low rail
CLOCK4	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK5	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK6	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK7	6.9999,-2.0001	str	[V] high rail, low rail
CLOCK8	3.0,-8.0001	str	[V] high rail, low rail
CLOCK9	3.0,-8.0001	str	[V] high rail, low rail
CLOCK10	3.0,-8.0001	str	[V] high rail, low rail
CLOCK11	0.0,0.0	str	[V] high rail, low rail
CLOCK12	3.0,-8.0001	str	[V] high rail, low rail
CLOCK13	3.0,-8.0001	str	[V] high rail, low rail
CLOCK14	3.0,-8.0001	str	[V] high rail, low rail
CLOCK15	0.0,0.0	str	[V] high rail, low rail
CLOCK16	0.0,0.0	str	[V] high rail, low rail
CLOCK17	3.9999,-4.0002	str	[V] high rail, low rail
CLOCK18	3.9999,-4.0002	str	[V] high rail, low rail
OFFSET0	-1.5,15.9547	str	[V] set value, measured value
OFFSET1	-1.5,15.7796	str	[V] set value, measured value
OFFSET2	-1.5,15.7899	str	[V] set value, measured value
OFFSET3	-1.5,15.9341	str	[V] set value, measured value
OFFSET4	-1.2599999904632568,-0.0105	str	[V] set value, measured value
OFFSET5	-1.309999942779541,-0.0158	str	[V] set value, measured value
OFFSET6	-1.5199999809265137,-0.0105	str	[V] set value, measured value
OFFSET7	-1.4700000286102295,-0.021	str	[V] set value, measured value
DELAYS	13, 13, 25, 25, 8, 3000, 7, 7, 400, 7	str	[10] Delay settings
CDSPARMS	350, 350, 8, 1000	str	CDS parameters
PGAGAIN	5	int	Controller gain
OCSVER	1.2	float	OCS software version
DOSVER	trunk	str	DOS software version
CONSTVER	DESI:CURRENT	str	Constants version
BUNIT	adu	str
NIGHT	20210407	int

Data: FITS image [float32, 4232x4162]