M. Wade, A. Viets
I have finished creating DCS calibration filters files for the C01 h(t) frame production. The first epoch for C01 h(t) frames will use filters file
aligocalibration/trunk/Runs/O3/GDSFilters/H1DCS_C01_1237831461.npz
I have attached plots from sanity checks run using this filters file on data from GPS times 1239036564-1239039340. The first attached plot is an ASD comparison of data calibrated with this filters file (expected C01 data), the corresponding C00 data, and the corresponding CAL-CS data. The second plot is the ASD ratio of these three strain products. The third plot is the response function as derived from the expected C01 data and the CAL-CS data compared to the pyDARM model response, and the fourth plot is a zoom-in on the ratio of this response function comparison. All of these tests indicate that this filters file is ready for use on C01 data, giving the expected level of agreement in each comparison.
I've made a few more plots to test these filters. The first three show the filters' effect on real data, compared to the frequency-domain model. The actuation filters show some apparent deviation at low frequencies, but this is likely due the the large dynamic range spanned in that frequency range, as it does not show up in the response function plot. The fourth plot shows the response function produced by the filters, compared to the frequency-domain model (same type of plot as in the above aLOG, but uses a different transfer function algorithm in an effort to reduce noisiness). The fifth plot shows ratios of DeltaL / Pcal at the calibration line frequencies. The sixth plot shows comparisons of h(t) to the cleaned data, to show that it is working.
