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
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
fracnsighi AUX Fraction of pixels high by more than N sigma relative to best-fit (for 1,2,..,10 sigma)

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
elodie_z_err AUX Error in redshift fit to ELODIE star
vdisp_err AUX km s-1 Error in velocity dispersion
z_err_noqso AUX Error in Z_NOQSO redshift
fiberid AUX Fiber number
elodie_filename AUX File name for best-fit ELODIE star
tfile AUX File that best fit template comes from in idlspec2d product
platequality AUX Final quality of plate this spectrum came from (good, marginal, or bad)
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
anyormask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ORMASK
fracnsigma AUX Fraction of pixels deviant 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)
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
targettype AUX General type of target (SCIENCE, STANDARD, or SKY)
xfocal AUX mm Hole position on plate (+X = +RA)
yfocal AUX mm Hole position on plate (+Y = +DEC)
boss_specobj_id AUX Identification number internal to BOSS for SPECBOSS=1 objects
spectrosynflux_ivar AUX nanomaggy-2 Inverse variance of best-fit template spectrum projected onto ugriz filters
spectroflux_ivar AUX nanomaggy-2 Inverse variance of spectrum projected onto ugriz filters
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations
elodie_logg AUX log10(gravity) of ELODIE star
sn_median_all AUX Median signal-to-noise per pixel across full spectrum
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
elodie_feh AUX Metallicity [Fe/H] of ELODIE star
mjd AUX days Modified Julian Day of observation
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with

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: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
comments_person AUX Visual-inspection comments
tcolumn AUX Columns of template files that correspond to each template
z_err_noqso AUX Error in Z_NOQSO redshift
platerun AUX Drilling run that this plate was drilled in
run2d AUX Spectroscopic 2D reduction (extraction of spectra) name
subclass AUX Best spectroscopic subclassification
plateid AUX Unique database ID of plate based on PLATE, MJD, RUN2D (same as SkyServer version)
vdispz AUX Redshift associated with best-fit velocity dispersion
mjd AUX days Modified Julian Day of observation
tfile AUX File that best fit template comes from in idlspec2d product
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
cy AUX y of Normal unit vector in J2000
sn_median_all AUX Median signal-to-noise per pixel across full spectrum
vdispdof AUX Number of degrees of freedom in velocity dispersion fit
nspecobs AUX Number of spectroscopic observations of this source
bluefiber AUX Set to 1 if this hole was designated a blue fiber, 0 if designated a red fiber (high redshift LRGs are preferentially in red fibers)
sourcetype AUX String expressing type of source (similar to OBJTYPE in DR8 and earlier)
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
elodie_z_err AUX Error in redshift fit to ELODIE star
ancillary_target1 AUX BOSS ancillary science target selection information at plate design
specsdss AUX Set to 1 for primary SDSS spectrograph observation of object, 0 otherwise
wcoverage AUX Coverage in wavelength, in units of log10 wavelength
spectrosynflux AUX nanomaggy Best-fit template spectrum projected onto ugriz filters
rchi2 AUX Reduced chi-squared of best fit
elodie_filename AUX File name for best-fit ELODIE star

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
chi2 AUX Best fit chi-squared
bgs_target AUX BGS (Bright Galaxy Survey) target selection bitmask
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
sv2_bgs_target AUX BGS (bright time program) target selection bitmask for SV2
sv3_bgs_target AUX BGS (bright time program) target selection bitmask for SV3
tsnr2_bgs AUX BGS template (S/N)^2 summed over B,R,Z
obsconditions AUX Bit-coded of allowed observing conditions
coadd_fiberstatus AUX Bitwise AND of the FIBERSTATUS values of the spectra used in the coadd
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
plate_dec AUX deg Declination to be used by PlateMaker
deltachi2 AUX Delta-chi-squared for template fit from Redrock
desi_target AUX DESI (dark time program) target selection bitmask
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
sv2_desi_target AUX DESI (dark time program) target selection bitmask for SV2
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
program AUX DESI program type - BRIGHT, DARK, BACKUP, OTHER
tsnr2_elg AUX ELG template (S/N)^2 summed over B,R,Z
fa_type AUX Fiberassign internal target type (science, standard, sky, safe, suppsky)
firstnight AUX First calendar date of the exposures used in the coadded spectrum as YYYYMMDD of the beginning of the observing night
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
healpix AUX HEALPixel containing this location at NSIDE=64 in the NESTED scheme
numobs_init AUX Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS
lastnight AUX Last calendar date of the exposures used in the coadded spectrum as YYYYMMDD of the beginning of the observing night

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)