Uv-data selection

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Uv-data selection

Before using Calibrater to solve for any calibration components, selection can be applied to the MS to restrict the subset of uv-data to be used in the solution. This is specified using the Calibrater.setdata method and the very general msselect query argument as follows:

cal.setdata(msselect='FIELD_ID IN [1,2,3]')  # select data only for calibrators 
                                             # (fields 1, 2, & 3 in this case):

Other selection keywords may be included in the msselect parameter, including ANTENNA1, ANTENNA2, SPECTRAL_WINDOW_ID, etc. These are described fully in the MS tool documentation. Arbitrary selection may be achieved by combining the selection keywords with the logical && and || operators.

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