hifa_lock_refant

hifa_lock_refant(vis=None) → ResultsList[Results][source]

Lock the reference antenna to a single antenna with refantmode='fixed'.

Sets the reference antenna to a single antenna and sets refantmode='fixed' for all subsequent calibration tasks, preventing any subsequent modification of the refant list.

In the polarization (polcal and polcalimage) recipes, hifa_bandpass and hifa_spwphaseup are each called a second time after this stage to ensure those calibration tables are computed using the fixed reference antenna.

The refant list can be unlocked with the hifa_unlock_refant task, although that is not needed in the standard polcal and polcalimage recipes.

Parameters:

vis --

List of input MeasurementSets. Defaults to the list of MeasurementSets specified in the pipeline context.

Example: vis=['ngc5921.ms']

Notes

Only used in polarization recipes.

Returns:

The results object for the pipeline task is returned.

Examples

  1. Lock the refant list for all MSes in pipeline context:

>>> hifa_lock_refant()