[CALIBRATE\]COLLECT FileFilter MergedFile [ReferenceAntenna] /FLAG
Threshold
If more than 1 self-calibration loop is present in the selected files,
the unstable solutions, defined as those for which the phase difference
between the last 2 iterations exceeds Threshold sigma, are flagged.
Note that this option can be used to flag solutions even if only one
frequency was used (i.e. when FileFilter refers to only one file).