Data Examination, Editing, and Flagging

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The main data examination and flagging tasks are:

listobs — summarize the contents of a MS (§ 2.2.6);
flagmanager — save and manage versions of the flagging entries in the measurement set (§ 3.2);
plotms — interactive X-Y plotting and flagging of visibility data (§ 3.3.1);
(plotxy — interactive X-Y plotting and flagging of visibility data (§ 3.3.2), note: plotxy is slower than plotms and will eventually be phased out, plotxy is still useful to create scripted hardcopy output, this functionality will likely be available in plotms in the next release);
tflagdata — flagging (and unflagging) of specified data (§ 3.4);
viewer — the CASA viewer can display (as a raster image) MS data, with some editing capabilities (§ 7);

These tasks allow you to list, plot, and/or flag data in a CASA MS.

There will eventually be tasks for “automatic” flagging to data based upon statistical criteria. Stay tuned.

Examination and editing of synthesis data is described in Chapter 3.

Visualization and editing of an MS using the casaviewer is described in Chapter 7.

More information about CASA may be found at the CASA web page