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gaincal failure "Caught exception: RecordInterface: field numthreads is unknown"
Posted by Miriam Krauss, Last modified by Miriam Krauss on 12 April 2013 07:08 PM
When running gaincal in CASA 4.0 and higher on a dataset that was previously calibrated using an earlier version of CASA, the following error may be generated:

Caught exception: RecordInterface: field numthreads is unknown

This will cause the gaincal run to fail without producing an output file. This is due to an incompatibility between the "scratch" MODEL_DATA column used by 3.4 and the virtual model stored in the header for 4.0 and up. To fix the problem, delete any model information prior to running setjy:

delmod(vis, scr=True)

Then proceed with calibration, starting at the setjy step.
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