CONSTRUCTION IN PROGRESS

  • Plot all fields as a function of time, colorize by field id. Change spw parameter to the science spws in your dataset. to spot problems with only one correlation, it can be helpful to also replace coloraxis='field' with coloraxis='corr'. The antenna='*&*' will only show crosscorrelations.

plotms(vis=asdm+'.ms',
       field='',xaxis='time', yaxis='amp',antenna='*&*',
       spw='17,19,21,23', avgchannel='3840',coloraxis='field',
       iteraxis='spw',ydatacolumn='data')

* Plot each calibrator and science field as a function of frequency, paying special attention to the bandpass calibrator.

plotms(vis=asdm+'.ms', 
       xaxis='freq', yaxis='amp',field='0',antenna='*&*',
       spw='17,19,21,23', avgtime='1e8',avgscan=T,coloraxis='corr',
       iteraxis='spw',ydatacolumn='data',xselfscale=True,yselfscale=True)

  • For bandpass calibrator check phase as a function of frequency

windows=['17','19','21','23']
for SPW in windows:
    plotms(vis=asdm+'.ms', 
       xaxis='freq', yaxis='amp',field='0',antenna='*&*',
       spw=SPW, avgtime='1e8',avgscan=T,coloraxis='baseline',
       iteraxis='antenna',ydatacolumn='data',xselfscale=True,yselfscale=True)

  • Check for phase coherence on the phase calibrator(s) on at least one antenna (the one chosen as the reference is a good choice.

plotms(vis=asdm+'.ms', 
       field='0',xaxis='time', yaxis='phase',antenna='DV14&*',
       spw='17', avgchannel='3840',coloraxis='corr',
       iteraxis='baseline',ydatacolumn='data')
Topic revision: r3 - 2012-10-02, AmyKimball
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