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
file CORE File used for this record
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
dateobs_center CORE Central value of the dateobs range
updated CORE Date and time when the record was created/updated
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)
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
extra_files CORE Additional files read for ingest
exptime CORE second Exposure time in seconds
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
specprimary CORE Whether an entry is the primary spectrum for a given target object
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)
telescope CORE [Categorical] Telescope used for the observation
specid CORE Dataset-specific spectrum identifier (may not be unique)
sparcl_id CORE Universally Unique Identifier for spectrum in SPARCL
dec CORE deg Declination in degrees
ra CORE deg Right Ascension in degrees
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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
nspecobs AUX Number of spectroscopic observations of this source
nturnoff AUX Number of stars used for SNTURNOFF determination
objid AUX SDSS photometric object identification numbers (RUN, RERUN, CAMCOL, FIELD, ID)
plate AUX Plate number (each plate corresponds to an actual plug plate)
plateid AUX Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version)
platequality AUX Final quality of plate this spectrum came from (good, marginal, or bad)
platerun AUX Drilling run that this plate was drilled in
platesn2 AUX Overall signal-to-noise-squared measure for plate (only for SDSS spectrograph plates)
primtarget AUX Target selection information at plate design, primary science selection (for backwards compatibility)
programname AUX Program within each survey that the plate was part of
rchi2 AUX Reduced chi-squared of best fit
rchi2diff AUX Difference in reduced chi-squared between best and second best fit
rchi2diff_noqso AUX Difference in reduced chi-squared between best and second best fit for Z_NOQSO redshift
run1d AUX Spectroscopic 1D reduction (redshift and classification) name
run2d AUX Spectroscopic 2D reduction (extraction of spectra) name
sectarget AUX Deprecated version of secondary (calibration) target flags (meanings highly overloaded)
segue1_target1 AUX Primary (science) target flags for SEGUE-1 targets
segue1_target2 AUX Primary (science) target flags for SEGUE-1 targets
segue2_target1 AUX Primary (science) target flags for SEGUE-2 targets
segue2_target2 AUX Secondary (calibration) target flags for SEGUE-2 targets
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
sn_median_all AUX Median signal-to-noise per pixel across full spectrum
snturnoff AUX Signal to noise measure for MS turnoff stars on plate (-9999 if not appropriate)
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
spec1_g AUX Signal-to-noise squared for spectrograph #1, at g=20.20 for SDSS spectrograph spectra, g=21.20 for BOSS spectrograph spectra

Data Set: SDSS-DR16, SPECTRA fields

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

Data Set: BOSS-DR16, AUX fields

Name Storage Units Description Default All
legacy_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey
legacy_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II Legacy survey
lambda_eff AUX AA Effective wavelength drilling position was optimized for
fracnsigma AUX Fraction of pixels deviant by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fracnsighi AUX Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with
fiberid AUX Fiber number
elodie_z_modelerr AUX Standard deviation in Elodie redshift among the 12 best-fit stars
elodie_z_err AUX Error in redshift fit to ELODIE star
elodie_z AUX Redshift fit to ELODIE star
elodie_teff AUX Kelvin Effective temperature of ELODIE star
elodie_sptype AUX ELODIE star spectral type
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
elodie_object AUX Star name for ELODIE star
elodie_logg AUX log10(gravity) of ELODIE star
elodie_filename AUX File name for best-fit ELODIE star
elodie_feh AUX Metallicity [Fe/H] of ELODIE star
elodie_dof AUX Degrees of freedom in fit to best ELODIE star
elodie_bv AUX mag (B-V) color index for ELODIE star
eboss_target_id AUX EBOSS unique target identifier for every spectroscopic target
eboss_target2 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
eboss_target1 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
eboss_target0 AUX SEQUELS, TDSS and SPIDERS target selection flags

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
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
cmx_target AUX Target selection bitmask for commissioning
pmra AUX mas year-1 Reference catalog proper motion in the RA direction
ncoeff AUX Number of Redrock template coefficients
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
chi2 AUX Best fit chi-squared
sv1_scnd_target AUX Secondary target selection bitmask for SV1
sv2_desi_target AUX DESI (dark time program) target selection bitmask for SV2
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
mean_delta_y AUX mm Mean (over exposures) fiber difference requested - actual CS5 Y location on focal plane
fa_type AUX Fiberassign internal target type (science, standard, sky, safe, suppsky)
std_fiber_dec AUX arcsec Standard deviation (over exposures) of DEC of actual fiber position
tsnr2_lrg AUX LRG template (S/N)^2 summed over B,R,Z
numobs_init AUX Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS
subtype AUX Spectral subtype
priority_init AUX Target initial priority from target selection bitmasks and OBSCONDITIONS
mws_target AUX Milky Way Survey targeting bits

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
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
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)
cz AUX z of Normal unit vector in J2000

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)