Uninformative error message selfcal

[IrisdeRuiter]

Running selfcalibration on an ATCA/BIGCAT observation like below

nohup dstools-selfcal --no-interactive ATCA_obs.ms/ &

returns the following error message

ERROR    2026-03-06 09:07:26 - dstools.cli.selfcal - This MS has not been split with .to_nspws()

This is likely due to the spectral windows not being combined in the provided measurement set. Error message should show something like 'combine spectral windows before proceeding', or try to combine spectral windows itself with something like:

mstransform(                  
    vis='ATCA_obs.ms',              
    combinespws=True,         
    datacolumn="all",         
    spw="0~14",             
    outputvis='ATCA_obs_combined.ms',    
)