Controls the rejection of time slices with inconsistent common-modes COM.SIG_LIMIT
"
com.perarray"
is zero, causing a single mean COM model to be used for all sub-arrays. In such cases, if the
common-mode signals estimated from the individual sub-arrays show significantly different structure,
subtracting a mean COM model will leave large residuals in the bolometer time streams. If a FLT model is being
used, the high pass filter will remove much of this residual signal, but any high frequency component will
remain, often causing strong "
blobs"
in the map.
The COM model can identify and flag time slices where the individual common-mode signals appear to be
significantly different to the mean common-mode signal. The individual common-mode signals are first
high-pass filtered using the same filter as the FLT model. At each time slice, the mean and standard deviation of
the remaining high frequency common-modes are found. The RMS of these standard deviations, taken over the
whole time stream, is then found. All bolometers within individual time slices for which the standard deviation
exceeds "
com.sig_limit"
times the RMS value are flagged in all sub-arrays, causing them to be excluded
from the FLT model and the map. Note, this flagging process is performed from scratch on each
iteration - that is, samples flagged on a previous iteration are tested again on each subsequent
iteration and may be "
unflagged"
if the differences between individual common-mode signal become
smaller.
Setting this parameter to 3 is a good starting point. Setting it to zero (the default) causes this consistency filter to
be skipped. See also parameter "
com.sig_wing"
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