RampFitStep

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

Bases: jwst.stpipe.Step

This step fits a straight line to the value of counts vs. time to determine the mean count rate for each pixel.

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

Attributes Summary

algorithm
reference_file_types
spec
weighting

Methods Summary

process(input) This is where real work happens.

Attributes Documentation

algorithm = 'ols'
reference_file_types = ['readnoise', 'gain']
spec = "\n int_name = string(default='')\n save_opt = boolean(default=False) # Save optional output\n opt_name = string(default='')\n "
weighting = 'optimal'

Methods Documentation

process(input)[source]

This is where real work happens. Every Step subclass has to override this method. The default behaviour is to raise a NotImplementedError exception.