MasterBackgroundStep

class jwst.master_background.MasterBackgroundStep(name=None, parent=None, config_file=None, _validate_kwds=True, **kws)[source]

Bases: JwstStep

Compute and subtract master background from spectra.

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 or pathlib.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_data)	Compute and subtract a master background spectrum.
`save_container`(container[, suffix, asn_id, ...])	Save all models in container for intermediate background subtraction.

Attributes Documentation

class_alias = 'master_background'

spec

median_kernel = integer(default=1) # Moving-median boxcar size to filter the background
user_background = string(default=None) # Path to user-supplied master background
save_background = boolean(default=False) # Save computed master background
force_subtract = boolean(default=False) # Force subtracting master background
output_use_model = boolean(default=True)

Methods Documentation

process(input_data)[source]

Compute and subtract a master background spectrum.

Parameters:: input_data (ImageModel, IFUImageModel,) – ModelContainer, str Input target datamodel(s) or association file to which master background subtraction is to be applied.
Returns:: result – ModelContainer The background-subtracted science datamodel(s)
Return type:: ImageModel, IFUImageModel,

save_container(container, suffix='', asn_id='', force=True)[source]: Save all models in container for intermediate background subtraction.