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.


 

Obtain Best Reference Files

  1. Using the Command Line
  2. From Dataset ID or FITS Header Upload
  3. Exploring with Instrument Parameters

Reference File Database Services

  1. Server Environment Package Versions
  2. Browse Database
  3. Recent Activity

Latest References (under context roman_0073.pmap)

wfi

roman_wfi_0071.imap      Toggle N/A


absflux ---- Absolute Flux Spectroscopy

abvegaoffset ---- AB-Vega Magnitude Offset

apcorr ---- Aperture Correction

area ---- Area

bam ---- Boresight Alignment Matrix

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

pars-assignwcsstep ---- AssignWcsStep runtime parameters

N/A

pars-darkcurrentstep ---- DarkCurrentStep runtime parameters

N/A

pars-darkdecaystep ---- DarkDecayStep runtime parameters

N/A

pars-dqinitstep ---- DQInitStep runtime parameters

N/A

pars-exposurepipeline ---- Step parameters for ExposurePipeline

N/A

pars-flatfieldstep ---- FlatFieldStep runtime parameters

N/A

pars-fluxstep ---- FluxStep runtime parameters

N/A

pars-highlevelpipeline ---- Step parameters for HighLevelPipeline

N/A

pars-jumpstep ---- JumpStep runtime parameters

N/A

pars-linearitystep ---- LinearityStep runtime parameters

N/A

pars-multibandcatalogstep ---- MultibandCatalogStep runtime parameters

N/A

pars-outlierdetectionstep ---- OutlierDetectionStep runtime parameters

N/A

pars-photomstep ---- PhotomStep runtime parameters

N/A

pars-rampfitstep ---- RampFitStep runtime parameters

N/A

pars-refpixstep ---- RefPixStep runtime parameters

N/A

pars-resamplestep ---- ResampleStep runtime parameters

N/A

pars-saturationstep ---- SaturationStep runtime parameters

N/A

pars-skymatchstep ---- SkyMatchStep runtime parameters

N/A

pars-sourcecatalogstep ---- SourceCatalogStep runtime parameters

N/A

pars-sourcedetectionstep ---- SourceDetectionStep runtime parameters

N/A

pars-tweakregstep ---- TweakRegStep runtime parameters

N/A

pars-wfi18transientstep ---- WFI18TransientStep runtime parameters

N/A

photom ---- Photom

readnoise ---- Read Noise

refpix ---- Reference Pixels

relflux ---- Relative Flux

saturation ---- Saturation Threshhold

sflat ---- Small Scale Flat

skycells ---- Skycells covering entire celestial sphere

specpsf ---- Spectral Point Spread Function


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

Start Date Context Status Description
2026-10-02 roman_0073.pmap latest Delivering the initial set of 10 WSM reference files for optical model, relative and absolute flux calibrations, small-scale flat-field, and spectral PSF. These 5 reference products are provided for both grism and prism. The optical model, absolute flux calibration and spectral PSF files were derived from the WFI as-built design model updated during TVAC ground test campaigns. The small-scale flat-field and relative flux calibration reference files are dummy versions set to unity. These will be updated with in-flight data from commissioning activities.
2026-09-24 roman_0072.pmap archived Delivering 144 new flats, and 18 each of saturation, mask, linearity, inverse linearity, photom, pixel area, and distortion reference files for WFI imaging and spectral modes. The pixel area and distortion reference files were updated from recent commissioning activities. The other reference files were derived from TVAC and SCIPA ground testing campaigns. Delivering an updated WFI flat rmap that splits up entries for optical elements F129, F146, F158, F184, F213. This is in preparation for the delivery of new flat reference files that cover individual detectors and optical elements.
2026-09-21 roman_0067.pmap archived Delivering a new WFI BAM reference file. The BAM has been derived using observations of stars from CAR-86.4 and CAR-86.7 taken between September 18 and September 20, 2026 to improve the relative alignment between the WFI and boresight. This is a small delta from the previous BAM.
2026-09-19 roman_0066.pmap archived Delivering a new WFI BAM reference file. The BAM has been derived using observations of stars from CAR-86.4 taken on September 18, 2026 to improve the relative alignment between the WFI and boresight. This is a small delta from the previous BAM, which used observations from CAR-86.1.