============================== zpix-SURVEY-PROGRAM-extra.fits ============================== :Summary: All remaining columns from the healpix-based redshift catalogs not included in the core or imaging files, one file per SURVEY and PROGRAM. Includes full Redrock output, TSNR2 scores, emission line fits, QuasarNET results, and per-tracer quality flags. :Naming Convention: ``zcatalog/v2/SURVEY/zpix-SURVEY-PROGRAM-extra.fits``, where ``SURVEY`` is *e.g.* ``main`` or ``sv1`` and ``PROGRAM`` is *e.g.* ``bright`` or ``dark``. :Regex: ``zpix-(cmx|main|sv1|sv2|sv3|special)-(backup|bright|dark|other)-extra\.fits`` :File Type: FITS, ~500 MB Contents ======== ====== =============== ======== ============================================================ Number EXTNAME Type Contents ====== =============== ======== ============================================================ HDU0_ PRIMARY IMAGE Empty HDU1_ ZCATALOG_EXTRA BINTABLE All extra columns not in core or imaging files ====== =============== ======== ============================================================ FITS Header Units ================= HDU0 ---- EXTNAME = PRIMARY Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ============ ================ ==== ======================= KEY Example Value Type Comment ============ ================ ==== ======================= CHECKSUM 9aaGCVYE9aaECUYE str HDU checksum DATASUM 0 str data unit checksum ZCATVER v2 str Version of zcatalog files ============ ================ ==== ======================= Empty HDU. HDU1 ---- EXTNAME = ZCATALOG_EXTRA All columns not included in the core :doc:`zpix-SURVEY-PROGRAM.fits <./zpix-SURVEY-PROGRAM>` or imaging :doc:`zpix-SURVEY-PROGRAM-imaging.fits <./zpix-SURVEY-PROGRAM-imaging>` files. Rows are in the same order and correspond 1-to-1 with the ZCATALOG HDU. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ============ ================ ==== ======================= KEY Example Value Type Comment ============ ================ ==== ======================= NAXIS1 870 int width of table in bytes NAXIS2 139728 int number of rows in table RRVER 0.15.0 str Redrock version SURVEY [1]_ main str DESI sub-survey (e.g. sv1, sv3, main) PROGRAM [1]_ dark str DESI program (e.g. dark, bright) CHECKSUM QA6lQ26iQ96iQ96i str HDU checksum DATASUM 4284326946 str data unit checksum ZCATVER v2 str Version of zcatalog files ============ ================ ==== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ========================== =========== ======== ===================================================================================================================================== Name Type Units Description ========================== =========== ======== ===================================================================================================================================== TARGETID int64 Unique DESI target ID HEALPIX [1]_ int32 HEALPixel number decoded from UNIQPIX (DR3+) NSIDE [1]_ int32 HEALPix NSIDE decoded from UNIQPIX (DR3+) SPGRPVAL int32 Value by which spectra are grouped for a coadd (healpixel number for healpix coadds) Z float64 Redshift measured by Redrock ZERR float32 Redshift error from redrock ZWARN int32 Redshift warning bitmask from Redrock CHI2 float32 Best fit chi squared COEFF float32[10] Redrock template coefficients NPIXELS int32 Number of unmasked pixels contributing to the Redrock fit SPECTYPE char[6] Spectral type of Redrock best fit template (e.g. GALAXY, QSO, STAR) SUBTYPE char[3] Spectral subtype NCOEFF int16 Number of Redrock template coefficients DELTACHI2 float32 chi2 difference between first- and second-best redrock template fits COEFF_BEST float32[10] Redrock template coefficients for Z_BEST fit SUBPRIORITY float64 Random subpriority [0-1] to break assignment ties FA_TARGET int64 Targeting bit internally used by fiberassign (linked with FA_TYPE) FA_TYPE binary Fiberassign internal target type (science, standard, sky, safe, suppsky) OBSCONDITIONS int16 Flag the target to be observed in graytime. PRIORITY_INIT int64 Target initial priority from target selection bitmasks and OBSCONDITIONS NUMOBS_INIT int64 Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS PLATE_RA float64 deg Barycentric Right Ascension in ICRS to be used by PlateMaker PLATE_DEC float64 deg Barycentric Declination in ICRS to be used by PlateMaker LAMBDA_REF float32 Angstrom Requested wavelength at which targets should be centered on fibers DEVICE_LOC int16 Device location on focal plane [0-523] LOCATION int16 Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC FITMETHOD char[4] Redshift fitting method (e.g. PCA) MEAN_DELTA_X float32 mm Mean (over exposures) fiber difference requested - actual CS5 X location on focal plane RMS_DELTA_X float32 mm RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane MEAN_DELTA_Y float32 mm Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane RMS_DELTA_Y float32 mm RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane MEAN_PSF_TO_FIBER_SPECFLUX float32 Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing MEAN_FIBER_RA float64 deg Mean (over exposures) RA of actual fiber position STD_FIBER_RA float32 arcsec Standard deviation (over exposures) of RA of actual fiber position MEAN_FIBER_DEC float64 deg Mean (over exposures) DEC of actual fiber position STD_FIBER_DEC float32 arcsec Standard deviation (over exposures) of DEC of actual fiber position MEAN_FIBER_X float32 mm Mean (over exposures) fiber CS5 X location on focal plane MEAN_FIBER_Y float32 mm Mean (over exposures) fiber CS5 Y location on focal plane TSNR2_GPBDARK_B float32 template (S/N)^2 for dark targets in guider pass band on B TSNR2_ELG_B float32 ELG B template (S/N)^2 TSNR2_GPBBRIGHT_B float32 template (S/N)^2 for bright targets in guider pass band on B TSNR2_LYA_B float32 LYA B template (S/N)^2 TSNR2_BGS_B float32 BGS B template (S/N)^2 TSNR2_GPBBACKUP_B float32 template (S/N)^2 for backup targets in guider pass band on B TSNR2_QSO_B float32 QSO B template (S/N)^2 TSNR2_LRG_B float32 LRG B template (S/N)^2 TSNR2_GPBDARK_R float32 template (S/N)^2 for dark targets in guider pass band on R TSNR2_ELG_R float32 ELG R template (S/N)^2 TSNR2_GPBBRIGHT_R float32 template (S/N)^2 for bright targets in guider pass band on R TSNR2_LYA_R float32 LYA R template (S/N)^2 TSNR2_BGS_R float32 BGS R template (S/N)^2 TSNR2_GPBBACKUP_R float32 template (S/N)^2 for backup targets in guider pass band on R TSNR2_QSO_R float32 QSO R template (S/N)^2 TSNR2_LRG_R float32 LRG R template (S/N)^2 TSNR2_GPBDARK_Z float32 template (S/N)^2 for dark targets in guider pass band on Z TSNR2_ELG_Z float32 ELG Z template (S/N)^2 TSNR2_GPBBRIGHT_Z float32 template (S/N)^2 for bright targets in guider pass band on Z TSNR2_LYA_Z float32 LYA Z template (S/N)^2 TSNR2_BGS_Z float32 BGS Z template (S/N)^2 TSNR2_GPBBACKUP_Z float32 template (S/N)^2 for backup targets in guider pass band on Z TSNR2_QSO_Z float32 QSO Z template (S/N)^2 TSNR2_LRG_Z float32 LRG Z template (S/N)^2 TSNR2_GPBDARK float32 template (S/N)^2 for dark targets in guider pass band TSNR2_ELG float32 ELG template (S/N)^2 summed over B,R,Z TSNR2_GPBBRIGHT float32 template (S/N)^2 for bright targets in guider pass band TSNR2_LYA float32 LYA template (S/N)^2 summed over B,R,Z TSNR2_BGS float32 BGS template (S/N)^2 summed over B,R,Z TSNR2_GPBBACKUP float32 template (S/N)^2 for backup targets in guider pass band TSNR2_QSO float32 QSO template (S/N)^2 summed over B,R,Z TSNR2_LRG float32 LRG template (S/N)^2 summed over B,R,Z OII_FLUX float32 [OII] doublet flux from emission line fit OII_FLUX_IVAR float32 Inverse variance of OII_FLUX IS_QSO_MGII logical True if this object is classified as a QSO by the MgII afterburner IS_QSO_QN_NEW_RR logical True if QuasarNET classification differs from Redrock and target is a QSO C_LYA float32 QuasarNET confidence for Lyman-alpha line C_CIV float32 QuasarNET confidence for CIV line C_CIII float32 QuasarNET confidence for CIII line C_MgII float32 QuasarNET confidence for MgII line C_Hbeta float32 QuasarNET confidence for H-beta line C_Halpha float32 QuasarNET confidence for H-alpha line Z_NEW float64 QuasarNET redshift (when IS_QSO_QN_NEW_RR is True) ZERR_NEW float64 QuasarNET redshift error ZWARN_NEW int64 Redshift warning bitmask for QuasarNET redshift SPECTYPE_NEW char[6] Spectral type from QuasarNET fit SUBTYPE_NEW char[20] Spectral subtype from QuasarNET fit CHI2_NEW float64 Chi squared for QuasarNET fit DELTACHI2_NEW float64 Delta chi2 for QuasarNET fit COEFF_NEW float64[10] Template coefficients for QuasarNET fit GOOD_Z_BGS logical True if BGS target with high-confidence redshift passing LSS quality cuts GOOD_Z_LRG logical True if LRG target with high-confidence redshift passing LSS quality cuts GOOD_Z_ELG logical True if ELG target with high-confidence redshift passing LSS quality cuts GOOD_Z_QSO logical True if QSO target with high-confidence redshift (Z_QSO) passing LSS quality cuts Z_QSO float64 QuasarNET-corrected QSO redshift (used in GOOD_Z_QSO evaluation) ZERR_QSO float32 Error on Z_QSO ========================== =========== ======== ===================================================================================================================================== .. [1] Optional