===== sppix ===== :Summary: FERRE results from coadded spectra for different surveys, programs. :Naming Convention: ``sppix-{SURVEY}-{PROGRAM}.fits``, where SURVEY is main, special, sv1, sv2, sv3, and PROGRAM is dark, bright, backup, other. :Regex: ``sppix-.*-.*fits`` :File Type: FITS, 100 MB Contents ======== ====== ======== ======== =================== Number EXTNAME Type Contents ====== ======== ======== =================== HDU0_ IMAGE Empty HDU HDU1_ SPTAB BINTABLE FERRE results HDU2_ FIBERMAP BINTABLE Information about objects inherited from targeting HDU3_ SCORES BINTABLE Information about spectra quality HDU4_ GAIA BINTABLE Gaia crossmatch ====== ======== ======== =================== FITS Header Units ================= HDU0 ---- Empty HDU. HDU1 ---- EXTNAME = SPTAB This is the table of measurements by FERRE of coadded DESI spectra for given survey/program. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ====== ============= ==== ===================== KEY Example Value Type Comment ====== ============= ==== ===================== NAXIS1 454 int length of dimension 1 NAXIS2 728 int length of dimension 2 ====== ============= ==== ===================== Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ========== =========== ====== =================================================================================================== Name Type Units Description ========== =========== ====== =================================================================================================== SUCCESS int64 Bit indicating whether the code has likely produced useful results TARGETID int64 Unique DESI target ID TARGET_RA float64 deg Target right ascension TARGET_DEC float64 deg Target declination REF_ID int64 Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 REF_CAT char[2] Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise SRCFILE char[20] DESI data file BESTGRID char[8] Model grid that produced the best fit TEFF float64 K Effective temperature (K) LOGG float64 Surface gravity (g in cm/s**2) FEH float64 Metallicity [Fe/H] = log10(N(Fe)/N(H)) - log10(N(Fe)/N(H))sun ALPHAFE float64 Alpha-to-iron ratio [alpha/Fe] LOG10MICRO float64 Log10 of Microturbulence (km/s) PARAM float64[5] Array of atmospheric parameters ([Fe/H], [a/Fe], log10micro, Teff,logg) COVAR float64[25] Covariance matrix for ([Fe/H], [a/Fe], log10micro, Teff,logg) ELEM float64[4] Elemental abundance ratios to hydrogen [elem/H] ELEM_ERR float64[4] Uncertainties in the elemental abundance ratios CHISQ_TOT float64 Total chi**2 SNR_MED float64 Median signal-to-ratio RV_ADOP float64 km s-1 Adopted Radial Velocity (km/s) RV_ERR float64 km s-1 Uncertainty in the adopted Radial Velocity (km/s) HEALPIX int64 HEALPixel containing this location at NSIDE=64 in the NESTED scheme ========== =========== ====== =================================================================================================== HDU2 ---- EXTNAME = FIBERMAP FIBERMAP table with information on individual targets copied from original coadd file. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ====== ============= ==== ===================== KEY Example Value Type Comment ====== ============= ==== ===================== NAXIS1 317 int length of dimension 1 NAXIS2 728 int length of dimension 2 ====== ============= ==== ===================== Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ========================== ======= ============ =============================================================================================================================== Name Type Units Description ========================== ======= ============ =============================================================================================================================== TARGETID int64 Unique DESI target ID COADD_FIBERSTATUS int32 bitwise-AND of input FIBERSTATUS TARGET_RA float64 deg Target right ascension TARGET_DEC float64 deg Target declination PMRA float32 mas yr^-1 proper motion in the +RA direction (already including cos(dec)) PMDEC float32 mas yr^-1 Proper motion in the +Dec direction REF_EPOCH float32 yr Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia 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) OBJTYPE char[3] Object type: TGT, SKY, NON, BAD SUBPRIORITY float64 Random subpriority [0-1) to break assignment ties OBSCONDITIONS int32 Bitmask of allowed observing conditions RELEASE int16 Imaging surveys release ID BRICKNAME char[8] Brick name from tractor input BRICKID int32 Brick ID from tractor input BRICK_OBJID int32 Imaging Surveys OBJID on that brick MORPHTYPE char[4] Imaging Surveys morphological type from Tractor EBV float32 mag Galactic extinction E(B-V) reddening from SFD98 FLUX_G float32 nanomaggy Flux in the Legacy Survey g-band (AB) FLUX_R float32 nanomaggy Flux in the Legacy Survey r-band (AB) FLUX_Z float32 nanomaggy Flux in the Legacy Survey z-band (AB) FLUX_W1 float32 nanomaggy WISE flux in W1 (AB) FLUX_W2 float32 nanomaggy WISE flux in W2 (AB) FLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of FLUX_G (AB) FLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of FLUX_R (AB) FLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of FLUX_Z (AB) FLUX_IVAR_W1 float32 nanomaggy^-2 Inverse variance of FLUX_W1 (AB) FLUX_IVAR_W2 float32 nanomaggy^-2 Inverse variance of FLUX_W2 (AB) FIBERFLUX_G float32 nanomaggy Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERFLUX_R float32 nanomaggy 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 z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERTOTFLUX_G float32 nanomaggy 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 r-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 z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing MASKBITS int16 Bitwise mask from the imaging indicating potential issue or blending SERSIC float32 Power-law index for the Sersic profile model (MORPHTYPE=SER) SHAPE_R float32 arcsec Half-light radius of galaxy model (>0) SHAPE_E1 float32 Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE SHAPE_E2 float32 Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE REF_ID int64 Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; sourceid for Gaia DR2 REF_CAT char[2] Reference catalog source for star: T2 for Tycho-2, G2 for Gaia DR2, L2 for the SGA, empty otherwise GAIA_PHOT_G_MEAN_MAG float32 mag Gaia G band magnitude GAIA_PHOT_BP_MEAN_MAG float32 mag Gaia BP band magnitude GAIA_PHOT_RP_MEAN_MAG float32 mag Gaia RP band magnitude PARALLAX float32 mas Reference catalog parallax PHOTSYS char[1] N for the MzLS/BASS photometric system, S for DECaLS 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 CMX_TARGET int64 Target selection bitmask for commissioning DESI_TARGET int64 DESI (dark time program) target selection bitmask BGS_TARGET int64 BGS (Bright Galaxy Survey) target selection bitmask MWS_TARGET int64 Milky Way Survey targeting bits PLATE_RA float64 deg Right Ascension to be used by PlateMaker PLATE_DEC float64 deg Declination to be used by PlateMaker COADD_NUMEXP int16 Number of exposures in coadd COADD_EXPTIME float32 s Summed exposure time for coadd COADD_NUMNIGHT int16 Number of nights in coadd COADD_NUMTILE int16 Number of tiles in coadd 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_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_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 ========================== ======= ============ =============================================================================================================================== HDU3 ---- EXTNAME = SCORES The table with various quality information about spectra. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ====== ============= ==== ===================== KEY Example Value Type Comment ====== ============= ==== ===================== NAXIS1 172 int length of dimension 1 NAXIS2 728 int length of dimension 2 ====== ============= ==== ===================== Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns =================== ======= ===== ====================================== Name Type Units Description =================== ======= ===== ====================================== TARGETID int64 Unique DESI target ID INTEG_COADD_FLUX_B float32 MEDIAN_COADD_FLUX_B float32 MEDIAN_COADD_SNR_B float32 INTEG_COADD_FLUX_R float32 MEDIAN_COADD_FLUX_R float32 MEDIAN_COADD_SNR_R float32 INTEG_COADD_FLUX_Z float32 MEDIAN_COADD_FLUX_Z float32 MEDIAN_COADD_SNR_Z float32 TSNR2_GPBDARK_B float32 TSNR2_ELG_B float32 ELG B template (S/N)^2 TSNR2_GPBBRIGHT_B float32 TSNR2_LYA_B float32 LYA B template (S/N)^2 TSNR2_BGS_B float32 BGS B template (S/N)^2 TSNR2_GPBBACKUP_B float32 TSNR2_QSO_B float32 QSO B template (S/N)^2 TSNR2_LRG_B float32 LRG B template (S/N)^2 TSNR2_GPBDARK_R float32 TSNR2_ELG_R float32 ELG R template (S/N)^2 TSNR2_GPBBRIGHT_R float32 TSNR2_LYA_R float32 LYA R template (S/N)^2 TSNR2_BGS_R float32 BGS R template (S/N)^2 TSNR2_GPBBACKUP_R float32 TSNR2_QSO_R float32 QSO R template (S/N)^2 TSNR2_LRG_R float32 LRG R template (S/N)^2 TSNR2_GPBDARK_Z float32 TSNR2_ELG_Z float32 ELG Z template (S/N)^2 TSNR2_GPBBRIGHT_Z float32 TSNR2_LYA_Z float32 LYA Z template (S/N)^2 TSNR2_BGS_Z float32 BGS Z template (S/N)^2 TSNR2_GPBBACKUP_Z float32 TSNR2_QSO_Z float32 QSO Z template (S/N)^2 TSNR2_LRG_Z float32 LRG Z template (S/N)^2 TSNR2_GPBDARK float32 TSNR2_ELG float32 ELG template (S/N)^2 summed over B,R,Z TSNR2_GPBBRIGHT float32 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 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 =================== ======= ===== ====================================== HDU4 ---- EXTNAME = GAIA The Gaia DR3 measurements for each object in the catalog. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ====== ============= ==== ===================== KEY Example Value Type Comment ====== ============= ==== ===================== NAXIS1 632 int length of dimension 1 NAXIS2 728 int length of dimension 2 ====== ============= ==== ===================== Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns =============================== ======== ========= ==================================================================== Name Type Units Description =============================== ======== ========= ==================================================================== SOLUTION_ID int64 DESIGNATION char[20] SOURCE_ID int64 RANDOM_INDEX int64 REF_EPOCH float64 yr Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia RA float64 deg Target Right Ascension RA_ERROR float32 DEC float64 deg Target declination DEC_ERROR float32 PARALLAX float64 mas Reference catalog parallax PARALLAX_ERROR float32 PARALLAX_OVER_ERROR float32 PM float32 PMRA float64 mas yr^-1 proper motion in the +RA direction (already including cos(dec)) PMRA_ERROR float32 PMDEC float64 mas yr^-1 Proper motion in the +Dec direction PMDEC_ERROR float32 RA_DEC_CORR float32 RA_PARALLAX_CORR float32 RA_PMRA_CORR float32 RA_PMDEC_CORR float32 DEC_PARALLAX_CORR float32 DEC_PMRA_CORR float32 DEC_PMDEC_CORR float32 PARALLAX_PMRA_CORR float32 PARALLAX_PMDEC_CORR float32 PMRA_PMDEC_CORR float32 ASTROMETRIC_N_OBS_AL int16 ASTROMETRIC_N_OBS_AC int16 ASTROMETRIC_N_GOOD_OBS_AL int16 ASTROMETRIC_N_BAD_OBS_AL int16 ASTROMETRIC_GOF_AL float32 ASTROMETRIC_CHI2_AL float32 ASTROMETRIC_EXCESS_NOISE float32 ASTROMETRIC_EXCESS_NOISE_SIG float32 ASTROMETRIC_PARAMS_SOLVED int16 ASTROMETRIC_PRIMARY_FLAG logical NU_EFF_USED_IN_ASTROMETRY float32 PSEUDOCOLOUR float32 PSEUDOCOLOUR_ERROR float32 RA_PSEUDOCOLOUR_CORR float32 DEC_PSEUDOCOLOUR_CORR float32 PARALLAX_PSEUDOCOLOUR_CORR float32 PMRA_PSEUDOCOLOUR_CORR float32 PMDEC_PSEUDOCOLOUR_CORR float32 ASTROMETRIC_MATCHED_TRANSITS int16 VISIBILITY_PERIODS_USED int16 ASTROMETRIC_SIGMA5D_MAX float32 MATCHED_TRANSITS int16 NEW_MATCHED_TRANSITS int16 MATCHED_TRANSITS_REMOVED int16 IPD_GOF_HARMONIC_AMPLITUDE float32 IPD_GOF_HARMONIC_PHASE float32 IPD_FRAC_MULTI_PEAK int16 IPD_FRAC_ODD_WIN int16 RUWE float32 SCAN_DIRECTION_STRENGTH_K1 float32 SCAN_DIRECTION_STRENGTH_K2 float32 SCAN_DIRECTION_STRENGTH_K3 float32 SCAN_DIRECTION_STRENGTH_K4 float32 SCAN_DIRECTION_MEAN_K1 float32 SCAN_DIRECTION_MEAN_K2 float32 SCAN_DIRECTION_MEAN_K3 float32 SCAN_DIRECTION_MEAN_K4 float32 DUPLICATED_SOURCE logical PHOT_G_N_OBS int16 PHOT_G_MEAN_FLUX float64 PHOT_G_MEAN_FLUX_ERROR float32 PHOT_G_MEAN_FLUX_OVER_ERROR float32 PHOT_G_MEAN_MAG float32 PHOT_BP_N_OBS int16 PHOT_BP_MEAN_FLUX float64 PHOT_BP_MEAN_FLUX_ERROR float32 PHOT_BP_MEAN_FLUX_OVER_ERROR float32 PHOT_BP_MEAN_MAG float32 PHOT_RP_N_OBS int16 PHOT_RP_MEAN_FLUX float64 PHOT_RP_MEAN_FLUX_ERROR float32 PHOT_RP_MEAN_FLUX_OVER_ERROR float32 PHOT_RP_MEAN_MAG float32 PHOT_BP_RP_EXCESS_FACTOR float32 PHOT_BP_N_CONTAMINATED_TRANSITS int16 PHOT_BP_N_BLENDED_TRANSITS int16 PHOT_RP_N_CONTAMINATED_TRANSITS int16 PHOT_RP_N_BLENDED_TRANSITS int16 PHOT_PROC_MODE int16 BP_RP float32 BP_G float32 G_RP float32 RADIAL_VELOCITY float32 RADIAL_VELOCITY_ERROR float32 RV_METHOD_USED int16 RV_NB_TRANSITS int16 RV_NB_DEBLENDED_TRANSITS int16 RV_VISIBILITY_PERIODS_USED int16 RV_EXPECTED_SIG_TO_NOISE float32 RV_RENORMALISED_GOF float32 RV_CHISQ_PVALUE float32 RV_TIME_DURATION float32 RV_AMPLITUDE_ROBUST float32 RV_TEMPLATE_TEFF float32 RV_TEMPLATE_LOGG float32 RV_TEMPLATE_FE_H float32 RV_ATM_PARAM_ORIGIN int16 VBROAD float32 VBROAD_ERROR float32 VBROAD_NB_TRANSITS int16 GRVS_MAG float32 GRVS_MAG_ERROR float32 GRVS_MAG_NB_TRANSITS int16 RVS_SPEC_SIG_TO_NOISE float32 PHOT_VARIABLE_FLAG char[20] L float64 B float64 ECL_LON float64 ECL_LAT float64 IN_QSO_CANDIDATES logical IN_GALAXY_CANDIDATES logical NON_SINGLE_STAR int16 HAS_XP_CONTINUOUS logical HAS_XP_SAMPLED logical HAS_RVS logical HAS_EPOCH_PHOTOMETRY logical HAS_EPOCH_RV logical HAS_MCMC_GSPPHOT logical HAS_MCMC_MSC logical IN_ANDROMEDA_SURVEY logical CLASSPROB_DSC_COMBMOD_QUASAR float32 CLASSPROB_DSC_COMBMOD_GALAXY float32 CLASSPROB_DSC_COMBMOD_STAR float32 TEFF_GSPPHOT float32 TEFF_GSPPHOT_LOWER float32 TEFF_GSPPHOT_UPPER float32 LOGG_GSPPHOT float32 LOGG_GSPPHOT_LOWER float32 LOGG_GSPPHOT_UPPER float32 MH_GSPPHOT float32 MH_GSPPHOT_LOWER float32 MH_GSPPHOT_UPPER float32 DISTANCE_GSPPHOT float32 DISTANCE_GSPPHOT_LOWER float32 DISTANCE_GSPPHOT_UPPER float32 AZERO_GSPPHOT float32 AZERO_GSPPHOT_LOWER float32 AZERO_GSPPHOT_UPPER float32 AG_GSPPHOT float32 AG_GSPPHOT_LOWER float32 AG_GSPPHOT_UPPER float32 EBPMINRP_GSPPHOT float32 EBPMINRP_GSPPHOT_LOWER float32 EBPMINRP_GSPPHOT_UPPER float32 LIBNAME_GSPPHOT char[20] EBV float32 mag Galactic extinction E(B-V) reddening from SFD98 =============================== ======== ========= ==================================================================== Notes and Examples ================== Example https://data.desi.lbl.gov/desi/science/mws/redux/edr/v1/sp_output/sppix-sv3-bright.fits