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
z_person AUX Visual-inspection redshift
fracnsiglo AUX Fraction of pixels low by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
sn_median AUX Median signal-to-noise per pixel within each of the ugriz bandpasses
anyandmask AUX For each bit, records whether any pixel in the spectrum has that bit set in its ANDMASK
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
elodie_object AUX Star name for ELODIE star
segue1_target2 AUX Primary (science) target flags for SEGUE-1 targets
speclegacy AUX Set to 1 for primary SDSS Legacy program observation of object, 0 otherwise
legacy_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II Legacy survey
designid AUX Design identification number for plate
ancillary_target2 AUX BOSS ancillary target selection information at plate design
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
eboss_target2 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
platequality AUX Final quality of plate this spectrum came from (good, marginal, or bad)
platesn2 AUX Overall signal-to-noise-squared measure for plate (only for SDSS spectrograph plates)
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
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
tfile AUX File that best fit template comes from in idlspec2d product

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: BOSS-DR16, AUX fields

Name Storage Units Description Default All
elodie_bv AUX mag (B-V) color index for ELODIE star
elodie_dof AUX Degrees of freedom in fit to best ELODIE star
elodie_feh AUX Metallicity [Fe/H] of ELODIE star
elodie_filename AUX File name for best-fit ELODIE star
elodie_logg AUX log10(gravity) of ELODIE star
elodie_object AUX Star name for ELODIE star
elodie_rchi2 AUX Reduced chi-squared of fit to best ELODIE star
elodie_sptype AUX ELODIE star spectral type
elodie_teff AUX Kelvin Effective temperature of ELODIE star
elodie_z AUX Redshift fit to ELODIE star
elodie_z_err AUX Error in redshift fit to ELODIE star
elodie_z_modelerr AUX Standard deviation in Elodie redshift among the 12 best-fit stars
fiberid AUX Fiber number
firstrelease AUX Name of first release this PLATE, MJD, FIBERID, RUN2D was associated with
fluxobjid AUX Unique database ID of flux-based photometric match based on RUN, RERUN, CAMCOl, FIELD, ID (same as SkyServer version)
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)
fracnsigma AUX Fraction of pixels deviant by more than N sigma relative to best-fit (for 1,2,..,10 sigma)
lambda_eff AUX AA Effective wavelength drilling position was optimized for
legacy_target1 AUX Primary (science) target flags for SDSS-I and SDSS-II Legacy survey
legacy_target2 AUX Secondary (calibration) target flags for SDSS-I and SDSS-II Legacy survey
marvels_target1 AUX Primary (science) target flags for MARVELS targets
marvels_target2 AUX Secondary (calibration) target flags for MARVELS targets
mjd AUX days Modified Julian Day of observation
npoly AUX Number of polynomial terms in fit

Data Set: BOSS-DR16, SPECTRA fields

Name Storage Units Description Default All
mask SPECTRA and_mask
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 pixel Line-spread function width (sigma of approximating Gaussian) in units of number of pixel
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

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
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
fa_type AUX Fiberassign internal target type (science, standard, sky, safe, suppsky)
healpix AUX HEALPixel containing this location at NSIDE=64 in the NESTED scheme
sv_nspec AUX Number of coadded spectra for this TARGETID in SV (SV1+2+3)
subpriority AUX Random subpriority [0-1] to break assignment ties
tsnr2_lya AUX LYA template (S/N)^2 summed over B,R,Z
coadd_numexp AUX Number of exposures included in the coadd for this target
obsconditions AUX Bit-coded of allowed observing conditions
tsnr2_qso AUX QSO template (S/N)^2 summed over B,R,Z
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
sv1_bgs_target AUX BGS (bright time program) target selection bitmask for SV1
sv2_mws_target AUX MWS (bright time program) target selection bitmask for SV2
sv2_scnd_target AUX Secondary target selection bitmask for SV2
sv1_desi_target AUX DESI (dark time program) target selection bitmask for SV1
mean_psf_to_fiber_specflux AUX Mean of input exposures fraction of light from point-like source captured by 1.5 arcsec diameter fiber given atmospheric seeing
tsnr2_gpbdark AUX GPBDARK template (S/N)^2 summed over BRZ
sv_primary AUX Boolean flag (True/False) for the primary coadded spectrum in SV (SV1+2+3)
sv3_desi_target AUX DESI (dark time program) target selection bitmask for SV3
tsnr2_gpbbackup AUX GPBBACKUP template (S/N)^2 summed over BRZ
survey AUX Survey name
sv3_mws_target AUX MWS (bright time program) target selection bitmask for SV3
zcat_nspec AUX Number of coadded spectra for this TARGETID in this zcatalog
objtype AUX Object type: TGT, SKY, NON, BAD
ncoeff AUX Number of Redrock template coefficients
npixels AUX Number of unmasked wavelengths that contributed to the redshift fit

Data Set: DESI-EDR, SPECTRA fields

Name Storage Units Description Default All
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
wave_sigma SPECTRA AA Line-spread function width (sigma of approximating Gaussian) in units of Angstroms
flux SPECTRA 1e-17 erg cm-2 s-1 AA-1 Coadded calibrated flux
wavelength SPECTRA AA Wavelength in units of Angstroms

Data Set: SDSS-DR17-test, AUX fields

Name Storage Units Description Default All
ancillary_target1 AUX BOSS ancillary science target selection information at plate design
ancillary_target2 AUX BOSS ancillary target selection information at plate design
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
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)
boss_specobj_id AUX Identification number internal to BOSS for SPECBOSS=1 objects
boss_target1 AUX Primary (science) target flags for BOSS targets
boss_target2 AUX Always set to zero (placeholder for BOSS target flags never used)
calibflux AUX nanomaggy ugriz fluxes used for calibrations
calibflux_ivar AUX nanomaggy-2 Inverse variances of ugriz fluxes used for calibrations
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)
chunk AUX Name of tiling chunk that this spectrum was tiled in (boss1, boss2, etc), important for tracking large-scale structure samples
class_noqso AUX Spectroscopic classification for Z_NOQSO redshift
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
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
deredsn2 AUX Dereddened overall signal-to-noise-squared measure for plate (only for BOSS spectrograph plates)
designid AUX Design identification number for plate
dof AUX Number of degrees of freedom in best fit
eboss_target1 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
eboss_target2 AUX eBOSS, TDSS and SPIDERS target selection flags for main eBOSS survey
eboss_target_id AUX EBOSS unique target identifier for every spectroscopic target
elodie_bv AUX mag (B-V) color index for 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
SPARCL Field Cat(alog)