slit_extended_flux_calibration

msaexp.utils.slit_extended_flux_calibration(slit, sens_file=None, prefix='msaexp_sensitivity', version='001', file_template='{prefix}_{grating}_{filter}_{version}.fits', threshold=0, fixed_slit_correction=True, quadrant_correction=True, nrs2_scale_gratings=['PRISM', 'G140M', 'G140H', 'G235M', 'G235H', 'G395M', 'G395H'], **kwargs)

Get flux calibration for extended-wavelength extractions

Parameters

slitSlitModel

Slitlet data object

sens_filestr, None

Explicit sensitivity curve filename to use

prefixstr

Prefix of sensitivity curve filename

file_templatestr

Template filename of the sensitivity curve to use, generated with file_template.format(prefix=prefix, filter=filter, grating=grating)

fixed_slit_correctionbool, int

The sensitivity curves were derived from fixed slit observations and then include a transformation from the FS to MSA. If this is True and the slit is itself from a fixed slit observation, remove that correction to put the sensitivity curve back in the frame of the fixed slits. If an int value is provided > 1, then correct to the FS frame even if the slit comes from the MSA.

quadrant_correctionbool

Apply quadrant-specific correction if q[1-4] columns found in the sensitivity table

nrs2_scale_gratingslist

List of gratings where the NRS2 / NRS1 correction will be applied if necessary

thresholdfloat

Threshold relative to the maximum of a particular grating sensitivivity curve below which to treat as invalid data. If a negative value is provided, just apply the detector-dependent correction rather than the full photometric calibration.

Returns

statusint

• 0 : fflat and/or sflat reference files used don’t end in ext.fits

• 1 : sens_file not found

• 2Sensitivity file found and applied to data, err, var_rnoise,

  and var_poisson attributes.