ROMAN Calibration Reference Data System (CRDS)

 

NOTICE

The term "operational" has changed to "latest" when referring to the newest CRDS Context available. For more information, please refer to the user guide.

Documentation updates are ongoing. If something in the user guide is ambiguous, please reach out to the CRDS team or file a help desk ticket.


 

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  2. From Dataset ID or FITS Header Upload
  3. Exploring with Instrument Parameters

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Latest References (under context roman_0053.pmap)

wfi

roman_wfi_0051.imap      Toggle N/A


absflux ---- Absolute Flux GDPS SSC

abvegaoffset ---- AB-Vega Magnitude Offset

apcorr ---- Aperture Correction

area ---- Area

dark ---- Dark

darkdecaysignal ---- Dark Decay Signal

detectorstatus ---- Detector Status

distortion ---- Distortion

dustmap ---- Galactic Dust Map

epsf ---- Empirical Point Spread Function

etc ---- Exposure Time Calculator

flat ---- Flat Field

gain ---- Gain image

integralnonlinearity ---- Integral Non-Linearity

inverselinearity ---- Inverse Linearity

ipc ---- Interpixel Capacitance

linearity ---- Linearity coefficients

mask ---- Bad Pixel Mask

matable ---- Multiple Accumulation Table

optmodel ---- Optical Model GDPS SSC

pars-assignwcsstep ---- AssignWcsStep runtime parameters

pars-darkcurrentstep ---- DarkCurrentStep runtime parameters

pars-dqinitstep ---- DQInitStep runtime parameters

pars-exposurepipeline ---- Step parameters for ExposurePipeline

pars-flatfieldstep ---- FlatFieldStep runtime parameters

pars-fluxstep ---- FluxStep runtime parameters

pars-highlevelpipeline ---- Step parameters for HighLevelPipeline

pars-jumpstep ---- JumpStep runtime parameters

pars-linearitystep ---- LinearityStep runtime parameters

pars-outlierdetectionstep ---- OutlierDetectionStep runtime parameters

pars-photomstep ---- PhotomStep runtime parameters

pars-rampfitstep ---- RampFitStep runtime parameters

pars-refpixstep ---- RefPixStep runtime parameters

pars-resamplestep ---- ResampleStep runtime parameters

pars-saturationstep ---- SaturationStep runtime parameters

pars-skymatchstep ---- SkyMatchStep runtime parameters

pars-sourcedetectionstep ---- SourceDetectionStep runtime parameters

pars-tweakregstep ---- TweakRegStep runtime parameters

photom ---- Photom

readnoise ---- Read Noise

refpix ---- Reference Pixels

relflux ---- Relative Flux GDPS SSC

saturation ---- Saturation Threshhold

sflat ---- Small scale flat GDPS SSC

skycells ---- Skycells covering entire celestial sphere

specpsf ---- Spectral Point Spread Function GDPS SSC


Context History (more history, all contexts, build contexts)

Start Date Context Status Description
2026-05-22 roman_0053.pmap latest Delivering a new Roman dustmap rmap with a catch-all case pointing to N/A. This update was implemented in order to avoid errors when doing CRDS operations with standard Roman headers, because there is no keyword that corresponds to FIELD for this reference type.
2026-05-20 roman_0052.pmap archived Delivering initial wfi ETC rmap to support delivery of Roman ETC reference files.
2026-05-07 roman_0051.pmap archived Delivering the first WFI dustmap rmap to initialize this new reference type and prepare for subsequent dustmap reference file deliveries. Delivering the initial WFI dustmap reference files for North and South fields. These files are needed for Roman Build 22 development and testing. Delivering a new WFI dustmap rmap that associates the new reference files, SFD_dust_4096_ngp.fits and SFD_dust_4096_sgp.fits, with the correct FIELD selectors.
2026-05-07 roman_0049.pmap archived The new IPC files were derived from ground TVAC data by analysis done at GSFC. The IPC kernels are now unique and derived for each detector and replacing the same kernel for all detectors in pervious versions. The aperture correction reference files were made using stpsf with enclosed radii spacing and interpolation to match expectations of romancal.