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
data_release CORE [Categorical] Data release of a given record (with a common data structure, e.g., SDSS-DR16, BOSS-DR16)
datasetgroup CORE [Categorical] Common name for a coherent set of spectra published as a single release (e.g., SDSS_BOSS)
dateobs CORE Range of observational dates for a given spectrum (single value for a single date)
dateobs_center CORE Central value of the dateobs range
dec CORE deg Declination in degrees
exptime CORE second Exposure time in seconds
extra_files CORE Additional files read for ingest
file CORE File used for this record
instrument CORE [Categorical] Instrument used for observation
ra CORE deg Right Ascension in degrees
redshift CORE Measured redshift, or radial velocity in units of redshift
redshift_err CORE Uncertainty on the measured redshift, or radial velocity in units of redshift
redshift_warning CORE Bitmask with warning on redshift result
site CORE [Categorical] Site of observations
sparcl_id CORE Universally Unique Identifier for spectrum in SPARCL
specid CORE Dataset-specific spectrum identifier (may not be unique)
specprimary CORE Whether an entry is the primary spectrum for a given target object
spectype CORE [Categorical] Spectral type of the object (STAR, GALAXY, QSO)
targetid CORE Dataset-specific photometric target identifier
telescope CORE [Categorical] Telescope used for the observation
updated CORE Date and time when the record was created/updated
wavemax CORE AA Maximum value of wavelength coverage in Angstroms
wavemin CORE AA Minimum value of wavelength coverage in Angstroms
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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
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only)
z_person AUX Visual-inspection redshift
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
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
z_err_noqso AUX Error in Z_NOQSO redshift
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
yfocal AUX mm Hole position on plate (+Y = +DEC)
xfocal AUX mm Hole position on plate (+X = +RA)
wcoverage AUX Coverage in wavelength, in units of log10 wavelength
vdispz_err AUX Error in redshift associated with best-fit velocity dispersion
vdispz AUX Redshift associated with best-fit velocity dispersion
vdispnpix AUX Number of pixels overlapping the templates used in the velocity dispersion fit
vdisp_err AUX km s-1 Error in velocity dispersion
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
vdispchi2 AUX Chi-squared for best-fit velocity dispersion
vdisp AUX km s-1 Velocity dispersion
tile AUX Tile number (each tile can have several plates drilled for it)
thing_id_targeting AUX Resolve THING_ID in SDSS imaging for targeted object
thing_id AUX Resolve THING_ID in SDSS imaging for best positional match
theta AUX Template coefficients of best fit
tfile AUX File that best fit template comes from in idlspec2d product
tcolumn AUX Columns of template files that correspond to each template
targettype AUX General type of target (SCIENCE, STANDARD, or SKY)
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
survey AUX Survey name

Data Set: SDSS-DR16, SPECTRA fields

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

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
z_conf_person AUX Visual-inspection confidence (0=not inspected or no confidence, 1,2=low confidence, 3,4=high confidence)
eboss_target_id AUX EBOSS unique target identifier for every spectroscopic target
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
boss_specobj_id AUX Identification number internal to BOSS for SPECBOSS=1 objects
marvels_target2 AUX Secondary (calibration) target flags for MARVELS targets
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
boss_target2 AUX Always set to zero (placeholder for BOSS target flags never used)
ancillary_target1 AUX BOSS ancillary science target selection information at plate design
cz AUX z of Normal unit vector in J2000
primtarget AUX Target selection information at plate design, primary science selection (for backwards compatibility)
targettype AUX General type of target (SCIENCE, STANDARD, or SKY)
spectrosynflux AUX nanomaggy Best-fit template spectrum projected onto ugriz filters
comments_person AUX Visual-inspection comments
yfocal AUX mm Hole position on plate (+Y = +DEC)
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters
segue2_target1 AUX Primary (science) target flags for SEGUE-2 targets
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
specsegue2 AUX Set to 1 for primary SDSS SEGUE-2 program observation of object, 0 otherwise
ancillary_target2 AUX BOSS ancillary target selection information at plate design
cy AUX y of Normal unit vector in J2000
legacy_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey
specsegue AUX Set to 1 for primary SDSS SEGUE program observation of object (including SEGUE-1 and SEGUE-2), 0 otherwise
plateid AUX Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version)
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
specboss AUX Set to 1 for primary BOSS spectrograph observation of object, 0 otherwise

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
numobs_init AUX Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS
objtype AUX Object type: TGT, SKY, NON, BAD
obsconditions AUX Bit-coded of allowed observing conditions
plate_dec AUX deg Declination to be used by PlateMaker
plate_ra AUX deg Right Ascension to be used by PlateMaker
pmdec AUX mas year-1 Reference catalog proper motion in the Dec direction
pmra AUX mas year-1 Reference catalog proper motion in the RA direction
priority_init AUX Target initial priority from target selection bitmasks and OBSCONDITIONS
program AUX DESI program type - BRIGHT, DARK, BACKUP, OTHER
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
rms_delta_y AUX mm RMS (over exposures) of the fiber difference between measured and requested CS5 Y location on focal plane
scnd_target AUX Target selection bitmask for secondary programs
spgrpval AUX Value corresponding to the grouping type indicated in the spgrp column. This is the same as the healpix column
std_fiber_dec AUX arcsec Standard deviation (over exposures) of DEC of actual fiber position
std_fiber_ra AUX arcsec Standard deviation (over exposures) of RA of actual fiber position
subpriority AUX Random subpriority [0-1] to break assignment ties
subtype AUX Spectral subtype
survey AUX Survey name
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
sv1_mws_target AUX MWS (bright time program) target selection bitmask for SV1
sv1_scnd_target AUX Secondary target selection bitmask for SV1
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
sv2_desi_target AUX DESI (dark time program) 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
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: 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
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms
wavelength SPECTRA AA Wavelength in units of Angstroms
model SPECTRA 1e-17 erg cm-2 s-1 AA-1 Pipeline best model fit
mask SPECTRA Mask value
ivar SPECTRA 1e+34 cm4 s2 AA2 erg-2 Inverse variance of flux
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux

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)