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: BOSS-DR16, AUX fields

Name Storage Units Description Default All
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
segue2_target2 AUX Secondary (calibration) target flags for SEGUE-2 targets
segue2_target1 AUX Primary (science) target flags for SEGUE-2 targets
segue1_target2 AUX Secondary (calibration) target flags for SEGUE-1 targets
segue1_target1 AUX Primary (science) target flags for SEGUE-1 targets
sectarget AUX Deprecated version of secondary (calibration) target flags (meanings highly overloaded)
run2d AUX Spectroscopic 2D reduction (extraction of spectra) name
run1d AUX Spectroscopic 1D reduction (redshift and classification) name
rchi2diff_noqso AUX Difference in reduced chi-squared between best and second best fit for Z_NOQSO redshift
rchi2diff AUX Difference in reduced chi-squared between best and second best fit
rchi2 AUX Reduced chi-squared of best fit
programname AUX Program within each survey that the plate was part of
primtarget AUX Target selection information at plate design, primary science selection (for backwards compatibility)
platesn2 AUX Overall signal-to-noise-squared measure for plate (only for SDSS spectrograph plates)
platerun AUX Drilling run that this plate was drilled in
platequality AUX Final quality of plate this spectrum came from (good, marginal, or bad)
plateid AUX Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version)
plate AUX Plate number (each plate corresponds to an actual plug plate)
objid AUX SDSS photometric object identification numbers (RUN, RERUN, CAMCOL, FIELD, ID)
nturnoff AUX Number of stars used for SNTURNOFF determination
nspecobs AUX Number of spectroscopic observations of this source
npoly AUX Number of polynomial terms in fit
mjd AUX days Modified Julian Day of observation
marvels_target2 AUX Secondary (calibration) target flags for MARVELS targets
marvels_target1 AUX Primary (science) target flags for MARVELS targets

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: SDSS-DR16, AUX fields

Name Storage Units Description Default All
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
spec1_r AUX Signal-to-noise squared for spectrograph #1, at r=20.25 for SDSS spectrograph spectra, r=20.20 for BOSS spectrograph spectra
spec2_g AUX Signal-to-noise squared for spectrograph #2, at g=20.20 for SDSS spectrograph spectra, g=21.20 for BOSS spectrograph spectra
spec2_i AUX Signal-to-noise squared for spectrograph #2, at i=19.90 for SDSS spectrograph spectra, i=20.20 for BOSS spectrograph spectra
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
specboss AUX Set to 1 for primary BOSS spectrograph observation of object, 0 otherwise
special_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II special program targets
special_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II special program targets
speclegacy AUX Set to 1 for primary SDSS Legacy program observation of object, 0 otherwise
specsdss AUX Set to 1 for primary SDSS spectrograph observation of object, 0 otherwise
specsegue AUX Set to 1 for primary SDSS SEGUE program observation of object (including SEGUE-1 and SEGUE-2), 0 otherwise
specsegue1 AUX Set to 1 for primary SDSS SEGUE-1 program observation of object, 0 otherwise
specsegue2 AUX Set to 1 for primary SDSS SEGUE-2 program observation of object, 0 otherwise
spectroflux AUX nanomaggy Spectrum projected onto ugriz filters
spectroflux_ivar AUX nanomaggy-2 Inverse variance of spectrum projected onto ugriz filters
spectrographid AUX Which spectrograph (1 or 2)
spectroskyflux AUX nanomaggy Sky flux in each of the ugriz imaging filters
spectrosynflux AUX nanomaggy Best-fit template spectrum projected onto ugriz filters
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters
subclass AUX Best spectroscopic subclassification
subclass_noqso AUX Spectroscopic subclassification for Z_NOQSO redshift
survey AUX Survey name
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
targettype AUX General type of target (SCIENCE, STANDARD, or SKY)
tcolumn AUX Columns of template files that correspond to each template

Data Set: SDSS-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: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
survey AUX Survey name
primtarget AUX Target selection information at plate design, primary science selection (for backwards compatibility)
theta AUX Template coefficients of best fit
tile AUX Tile number (each tile can have several plates drilled for it)
calibflux AUX nanomaggy ugriz fluxes used for calibrations
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
plateid AUX Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version)
targetobjid AUX Unique database ID of targeting object based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
vdisp AUX km s-1 Velocity dispersion
class_person AUX Visual-inspection classification (0=not inspected or unknown, 1=star, 2=narrow emission-line galaxy, 3=QSO, 4=galaxy)
comments_person AUX Visual-inspection comments
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
zwarning_noqso AUX Warnings in z_noqso redshift (BOSS spectra only)
zoffset AUX micron Washer thickness used for backstopping BOSS quasar targets, so they are closer to 4000 Angstrom focal plan
spectrographid AUX Which spectrograph (1 or 2)
cx AUX x of Normal unit vector in J2000
cy AUX y of Normal unit vector in J2000
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

Data Set: DESI-EDR, AUX fields

Name Storage Units Description Default All
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
tsnr2_lya AUX LYA template (S/N)^2 summed over B,R,Z
tsnr2_lrg AUX LRG template (S/N)^2 summed over B,R,Z
tsnr2_gpbdark AUX GPBDARK template (S/N)^2 summed over BRZ
tsnr2_gpbbright AUX GPBBRIGHT template (S/N)^2 summed over B,R,Z
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
sv3_scnd_target AUX Secondary target selection bitmask for SV3
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
sv2_desi_target AUX DESI (dark time program) target selection bitmask for SV2
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
sv1_scnd_target AUX Secondary target selection bitmask for SV1
sv1_mws_target AUX MWS (bright time program) target selection bitmask for SV1
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
survey AUX Survey name
subtype AUX Spectral subtype

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
SPARCL Field Cat(alog)