SPARCL - SPARCL Field Catalog (SFC)

SPARCL Field Catalog

List of Fields available via Retrieve

CORE fields (common to all Data Sets)

Name Storage Units Description Default All
extra_files CORE Additional files read for ingest
updated CORE Date and time when the record was created/updated
file CORE File used for this record
dateobs_center CORE Central value of the dateobs range
site CORE [Categorical] Site of observations
datasetgroup CORE [Categorical] Common name for a coherent set of spectra published as a single release (e.g., SDSS_BOSS)
specid CORE Dataset-specific spectrum identifier (may not be unique)
instrument CORE [Categorical] Instrument used for observation
redshift CORE Measured redshift, or radial velocity in units of redshift
targetid CORE Dataset-specific photometric target identifier
ra CORE deg Right Ascension in degrees
data_release CORE [Categorical] Data release of a given record (with a common data structure, e.g., SDSS-DR16, BOSS-DR16)
wavemin CORE AA Minimum value of wavelength coverage in Angstroms
spectype CORE [Categorical] Spectral type of the object (STAR, GALAXY, QSO)
dec CORE deg Declination in degrees
telescope CORE [Categorical] Telescope used for the observation
redshift_err CORE Uncertainty on the measured redshift, or radial velocity in units of redshift
wavemax CORE AA Maximum value of wavelength coverage in Angstroms
sparcl_id CORE Universally Unique Identifier for spectrum in SPARCL
exptime CORE second Exposure time in seconds
specprimary CORE Whether an entry is the primary spectrum for a given target object
dateobs CORE Range of observational dates for a given spectrum (single value for a single date)
redshift_warning CORE Bitmask with warning on redshift result
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AUX and SPECTRA fields (unique to each Data Set)

Data Set: SDSS-DR16, AUX fields

Name Storage Units Description Default All
tfile AUX File that best fit template comes from in idlspec2d product
theta AUX Template coefficients of best fit
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
thing_id_targeting AUX Resolve THING_ID in SDSS imaging for targeted object
tile AUX Tile number (each tile can have several plates drilled for it)
vdisp AUX km s-1 Velocity dispersion
vdispchi2 AUX Chi-squared for best-fit velocity dispersion
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
vdisp_err AUX km s-1 Error in velocity dispersion
vdispnpix AUX Number of pixels overlapping the templates used in the velocity dispersion fit
vdispz AUX Redshift associated with best-fit velocity dispersion
vdispz_err AUX Error in redshift associated with best-fit velocity dispersion
wcoverage AUX Coverage in wavelength, in units of log10 wavelength
xfocal AUX mm Hole position on plate (+X = +RA)
yfocal AUX mm Hole position on plate (+Y = +DEC)
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
z_err_noqso AUX Error in Z_NOQSO redshift
z_noqso AUX Best redshift when ignoring QSO fits, recommended for BOSS CMASS and LOWZ targets; calculated only for survey=boss spectra, not for any SDSS spectrograph data
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
z_person AUX Visual-inspection redshift
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only)

Data Set: SDSS-DR16, SPECTRA fields

Name Storage Units Description Default All
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
mask SPECTRA and_mask

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
segue2_target2 AUX Secondary (calibration) target flags for SEGUE-2 targets
tcolumn AUX Columns of template files that correspond to each template
snturnoff AUX Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate)
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations
spectroflux_ivar AUX nanomaggy-2 Inverse variance of spectrum projected onto ugriz filters
calibflux AUX nanomaggy ugriz fluxes used for calibrations
spectrosynflux AUX nanomaggy Best-fit template spectrum projected onto ugriz filters
spectroskyflux AUX nanomaggy Sky flux in each of the ugriz imaging filters
spectroflux AUX nanomaggy Spectrum projected onto ugriz filters
yfocal AUX mm Hole position on plate (+Y = +DEC)
xfocal AUX mm Hole position on plate (+X = +RA)
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
elodie_bv AUX mag (B-V) color index for ELODIE star
vdisp_err AUX km s-1 Error in velocity dispersion
vdisp AUX km s-1 Velocity dispersion
elodie_teff AUX Kelvin Effective temperature of ELODIE star
mjd AUX days Modified Julian Day of observation
lambda_eff AUX AA Effective wavelength drilling position was optimized for

Data Set: BOSS-DR16, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA and_mask
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel

Data Set: DESI-DR1, AUX fields

Name Storage Units Description Default All
survey AUX Survey name
main_nspec AUX Number of coadded spectra for this TARGETID in Main survey
bgs_target AUX BGS (Bright Galaxy Survey) target selection bitmask
program AUX DESI program type - BRIGHT, DARK, BACKUP, OTHER
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog
desi_target AUX DESI (dark time program) target selection bitmask
sv3_scnd_target AUX Secondary target selection bitmask for SV3
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
coadd_fiberstatus AUX Bitwise AND of the FIBERSTATUS values of the spectra used in the coadd
pmdec AUX mas year-1 Reference catalog proper motion in the Dec direction
std_fiber_ra AUX arcsec Standard deviation (over exposures) of RA of actual fiber position
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
sv1_mws_target AUX MWS (bright time program) target selection bitmask for SV1
objtype AUX Object type: TGT, SKY, NON, BAD
plate_ra AUX deg Right Ascension to be used by PlateMaker
coadd_numexp AUX Number of exposures included in the coadd for this target
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
rms_delta_y AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane
ref_epoch AUX year Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia
rms_delta_x AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 X location on focal plane
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
sv2_scnd_target AUX Secondary target selection bitmask for SV2

Data Set: DESI-DR1, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms
mask SPECTRA Mask value
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
wavelength SPECTRA AA Wavelength in units of Angstroms

Data Set: DESI-EDR, AUX fields

Name Storage Units Description Default All
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
sv3_scnd_target AUX Secondary target selection bitmask for SV3
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
tsnr2_gpbdark AUX GPBDARK template (S/N)^2 summed over BRZ
tsnr2_lrg AUX LRG template (S/N)^2 summed over B,R,Z
tsnr2_lya AUX LYA template (S/N)^2 summed over B,R,Z
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog

Data Set: DESI-EDR, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA Mask value
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms

Data Set: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
cz AUX z of Normal unit vector in J2000
elodie_z AUX Redshift fit to ELODIE star
specsegue AUX Set to 1 for primary SDSS SEGUE program observation of object (including SEGUE-1 and SEGUE-2), 0 otherwise
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
nturnoff AUX Number of stars used for SNTURNOFF determination
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
specsegue1 AUX Set to 1 for primary SDSS SEGUE-1 program observation of object, 0 otherwise
elodie_z_err AUX Error in redshift fit to ELODIE star
lambda_eff AUX AA Effective wavelength drilling position was optimized for
eboss_target1 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
snturnoff AUX Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate)
spec1_i AUX Signal-to-noise squared for spectrograph #1, at i=19.90 for SDSS spectrograph spectra, i=20.20 for BOSS spectrograph spectra
specsegue2 AUX Set to 1 for primary SDSS SEGUE-2 program observation of object, 0 otherwise
spectrographid AUX Which spectrograph (1 or 2)
objid AUX SDSS photometric object identification numbers (RUN, RERUN, CAMCOL, FIELD, ID)
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
z_person AUX Visual-inspection redshift
elodie_feh AUX Metallicity [Fe/H] of ELODIE star
spectrosynflux AUX nanomaggy Best-fit template spectrum projected onto ugriz filters
spec2_r AUX Signal-to-noise squared for spectrograph #2, at r=20.25 for SDSS spectrograph spectra, r=20.20 for BOSS spectrograph spectra
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
plate AUX Plate number (each plate corresponds to an actual plug plate)
chi68p AUX 68-th percentile value of abs(chi) of the best-fit synthetic spectrum to the actual spectrum (around 1.0 for a good fit)
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)

Data Set: SDSS-DR17-test, SPECTRA fields

Name Storage Units Description Default All
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
mask SPECTRA and_mask
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit used for classification and redshift
sky SPECTRA 1e-17 erg cm-2 s-1 AA-1 Subtracted sky flux
wavelength SPECTRA AA Wavelength in units of Angstroms
wave_sigma SPECTRA pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
SPARCL Field Cat(alog)