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spacetelescope / jwst

Python library for science observations from the James Webb Space Telescope

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CRDS - ERROR - Error determining best reference for 'pars-nscleanstep'

leighfletcher opened this issue · comments

commented

I'm attempting to use the NSClean step on NIRSpec/IFU cubes, which jdox describes as "non-default". During stage 2, I'm getting the following CRDS errors:

CRDS - ERROR - Error determining best reference for 'pars-nscleanstep' = Unknown reference type 'pars-nscleanstep'
CRDS - ERROR - Error determining best reference for 'pars-pixelreplacestep' = Unknown reference type 'pars-pixelreplacestep'

Does this mean that NSClean has failed for these cubes?

I'm using build 1.14, pmap 1217, newly installed on 2024-03-27 under python3.10.

commented

Those particular kinds of "error" messages from CRDS are not actually errors or at least don't cause any kind of error during processing. They are messages indicating that no parameter reference files were found in CRDS for the nsclean and pixel_replace steps that are part of the Spec2Pipeline. But that's OK, because it just means that those steps will execute using default parameter values, or possibly parameter values set for those steps in a pars-spec2pipeline parameter reference file (if one exists). You should be able to confirm that the nsclean step was executed by looking for log messages from that step itself during the processing run.

commented

Thanks very much for confirming!