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The data are averaged in time according to the SET AVERAGING command. It is possible to average by scan or time. In addition, this command also controls if the data are averaged as complex numbers (VECTOR) or if amplitude and phase are averaged separately (SCALAR). Be cautious about the amplitude bias especially in spectral plots where the much lower bandwidth of channels can bring the signal to noise to low values even on calibrators (see section 2.4.2 and 2.4.3).

In addition to and after the time averaging, the data in the plot may be averaged in bins of the x coordinates with the command SET BINNING. It is useful to average data in spectral mode. Any SET X command resets the binning.

Gildas manager 2022-01-17