PixelReplaceStep

class jwst.pixel_replace.PixelReplaceStep(name=None, parent=None, config_file=None, _validate_kwds=True, **kws)[source]

Bases: JwstStep

PixelReplaceStep: Module for replacing flagged bad pixels with an estimate of their flux, prior to spectral extraction.

algorithm

Method used to estimate flux values for bad pixels. Currently only one option is implemented, using a profile fit to adjacent column values.

Type:

str

n_adjacent_cols

Number of adjacent columns (on either side of column containing a bad pixel) to use in creation of source profile, in cross-dispersion direction. The total number of columns used in the profile will be twice this number; on array edges, take adjacent columns until this number is reached.

Type:

int

Create a Step instance.

Parameters:

  • name (str, optional) – The name of the Step instance. Used in logging messages and in cache filenames. If not provided, one will be generated based on the class name.

  • parent (Step instance, optional) – The parent step of this step. Used to determine a fully-qualified name for this step, and to determine the mode in which to run this step.

  • config_file (str path, optional) – The path to the config file that this step was initialized with. Use to determine relative path names of other config files.

  • **kws (dict) – Additional parameters to set. These will be set as member variables on the new Step instance.

Attributes Summary

class_alias

spec

Methods Summary

process(input)

Execute the step.

Attributes Documentation

class_alias = 'pixel_replace'
spec
algorithm = option("fit_profile", "mingrad", "N/A", default="fit_profile")
n_adjacent_cols = integer(default=3)    # Number of adjacent columns to use in creation of profile
skip = boolean(default=True) # Step must be turned on by parameter reference or user

Methods Documentation

process(input)[source]

Execute the step.

Parameters:

input (JWST DataModel) –

Returns:

This will be input if the step was skipped; otherwise, it will be a model containing data arrays with estimated fluxes for any bad pixels, now flagged as TO-BE-DETERMINED (DQ bit 7?).

Return type:

JWST DataModel