Action: append and solnorm

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4.4.1.6 Action: append and solnorm

The following parameters control some things that happen after solutions are obtained:

solnorm = False # Normalize solution amplitudes post-solve.
append = False # Append solutions to (existing) table. False will overwrite.

The solnorm parameter toggles on the option to normalize the solution amplitudes after the solutions are obtained. The exact effect of this depends upon the type of solution. Not all tasks include this parameter.

One should be aware when using solnorm that if this is done in the last stage of a chain of calibration, then the part of the calibration that is “normalized” away will be lost. It is best to use this in early stages (for example in a first bandpass calibration) so that later stages (such as final gain calibration) can absorb the lost normalization scaling. It is not strictly necessary to use solnorm=True at all, but is sometimes helpful if you want to have a normalized bandpass for example.

The append parameter, if set to True, will append the solutions from this run to existing solutions in caltable. Of course, this only matters if the table already exists. If append=False and caltable exists, it will overwrite.

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