Allow finer estimation of the noise levels in the time-series data

Specifies the
number of time slices used to determine the noise level in a section of a bolometer time stream. If
zero, then the whole bolometer time stream is used, and each bolometer has only one variance
value. If non-zero, each bolometer time stream is divided up into boxes containing the specified
number of time slices, and a separate variance is found for each box. This variance is then used for
each sample in the box, so each bolometer ends up with a variance for every time slice. Negative
values are interpreted as number of seconds, and positive values as a number of down-sampled
time slices. Note, very small box sizes may produce unrepresentative noise levels, and there is
a hard minimum of 101 on the number of downsampled time slices in a noise box. Also, if the
number of time slices in the data is smaller than two times the requested box size, then a single
noise value is used for each bolometer. [-15]

- Type:

MAKEMAP, CALCQU

Copyright © 2014-2015 Science and Technology Facilities Council,

East Asian Observatory

East Asian Observatory