Altough the high frequency is kind of screwed up by the wandering line, we can get some interesting information about the lower frequencies.
The full report can be found at the following address:
https://ldas-jobs.ligo.caltech.edu/~gabriele.vajente/bruco_1108981336/
The most interesting coherence is with SUS-BS_M1_ISIWIT_PIT_DQ, which seems enough to explain most of the noise up to 100 Hz. This is consistent with what Sheila told me, i.e. that we're not fully using BS ISI.
For those interested in the BruCo details, I managed to reduce a lot the time needed to analyze the data, basically with the following modifications: split coherence computation into the single FFT computations, to reduce redundancy; parallelize the computation and expcially the disk access using all available processors. This brought down the typical execution time to analyze 10 minutes of data from 8 hours to about 20-30 minutes. The new code is attached.
Here are all the files needed to run BruCo:
bruco.py: main file to execute, see inside for instructions and configurations
functions.py: some auxiliary functions are defined here
markup.py: a library to create HTML pages
bruco_excluded_channels.txt: list of all channels that must be excluded from the coherence computation
