NIRISSGrismModel

class stdatamodels.jwst.datamodels.NIRISSGrismModel(init=None, displ=None, dispx=None, dispy=None, invdispl=None, orders=None, fwcpos_ref=None, **kwargs)

Bases: ReferenceFileModel

A model for a reference file of type “specwcs” for NIRISS grisms.

Initialize the model.

Parameters:

initstr, None, optional

File name for input file in ASDF format from which to initialize the model.

displModel

NIRISS Grism wavelength dispersion model

dispxModel

NIRISS Grism row dispersion model

dispyModel

NIRISS Grism column dispersion model

invdisplModel

NIRISS Grism inverse wavelength dispersion model

ordersModel

NIRISS Grism orders, matched to the array locations of the dispersion models

fwcpos_reffloat

The reference value for the filter wheel position

**kwargs

Additional keyword arguments to pass to ReferenceFileModel

Attributes Summary

reftype
schema_url	The schema URI to validate the model against.

Methods Summary

populate_meta()
to_fits()	Write a data model to a FITS file.
validate()	Check that required reference file keywords are set.

Attributes Documentation

reftype = 'specwcs'

schema_url = 'http://stsci.edu/schemas/jwst_datamodel/specwcs_niriss_grism.schema'

The schema URI to validate the model against. If None, only basic validation of required metadata properties (filename, model_type) will occur.

Methods Documentation

populate_meta()

to_fits()

Write a data model to a FITS file.

Parameters:

initfile path or file object

The file to write to.

*args

Additional positional arguments passed to astropy.io.fits.writeto.

**kwargs

Additional keyword arguments passed to astropy.io.fits.writeto.

validate()

Check that required reference file keywords are set.