pipeline.hif.cli.hif_uvcontsub

hif_uvcontsub(vis=None, field=None, intent=None, spw=None, fitorder=None, parallel=None) → ResultsList[Results][source]

Fit and subtract continuum from the data.

hif_uvcontsub fits the continuum for the frequency ranges given in the cont.dat file, subtracts that fit from the uv data and generates a new set of MSes containing the continuum subtracted (i.e. line) data. The fit is attempted for all science targets and spws. If a fit is impossible, the corresponding data selection is not written to the output line MS.

Parameters:

  • vis --

    The list of input MeasurementSets. Defaults to the list of MeasurementSets specified in the <hifa,hifv>_importdata task. '': use all MeasurementSets in the context

    Examples: 'ngc5921.ms', ['ngc5921a.ms', ngc5921b.ms', 'ngc5921c.ms']

  • field --

    The list of field names or field ids for which UV continuum fits are computed. Defaults to all fields.

    Examples: '3C279', '3C279,M82'

  • intent --

    A string containing a comma delimited list of intents against which the selected fields are matched.

    '': Defaults to all data with TARGET intent.

  • spw --

    The list of spectral windows and channels for which uv continuum fits are computed. '', Defaults to all science spectral windows.

    Example: '11,13,15,17'

  • fitorder --

    Polynomial order for the continuum fits per source and spw. Defaults to {} which means fit order 1 for all sources and spws. If an explicit dictionary is given then all unspecified selections still default to 1.

    Example: {'3C279': {'15': 1, '17': 2}, 'M82': {'13': 2}}

  • parallel --

    Process multiple MeasurementSets in parallel using the casampi parallelization framework.

    Options: 'automatic', 'true', 'false', True, False

    Default: None (equivalent to False)

Returns:

The results object for the pipeline task is returned.

Examples

  1. Fit and subtract continuum for all science targets and spws

>>> hif_uvcontsub()

  1. Fit and subtract continuum only for a subsect of fields

>>> hif_uvcontsub(field='3C279,M82'

  1. Fit and subtract continuum only for a subsect of spws

>>> hif_uvcontsub(spw='11,13')

  1. Override automatic fit order choice

>>> hif_uvcontsub(fitorder={'3C279': {'15': 1, '17': 2}, 'M82': {'13': 2}})