[A. Viets, M. Wade, J. Kissel]

The filters for C01 calibration for the first part of O3b are now ready for use.  There will only be one epoch spanning the GPS time period 1256655618 - 1263060018.  Information about filters and configurations to be used for each epoch can be found on the GDS/DCS configurations wiki page.

Epoch 1: 1256655618 (Nov 01 2019) - 1263060018 (Jan 14 2020)

This epoch uses filters file aligocalibration/trunk/Runs/O3/GDSFilters/H1DCS_C01_1256655618.npz which is made from the model file aligocalibration/trunk/Runs/O3/H1/params/modelparams_H1_20200103.

Info about model file:  This model includes a dynamical model of the UIM to TST transfer function which mitigates the 3%-level systematic error in the response function at ~150 Hz.  This model also includes an updated test mass mass for O3, improved locations of violin mode frequencyes for L2 and L3 transfer function, reduction in amount of violin modes accounted for on the L1 to L3 stage, updated actuation strength coefficients for all three stages, updated sensing function parameters to account for switch to 38W power from 36W.

These filters were tested by calibrating C01-style data during three different PCAL broadband injection throughout this epoch and comparing the calibrated strain data to the broadband injection.  The three attached plots show this ratio for broadband injections at GPS times 1258923929, 1260738026, and 1262638968, respectively.  Plots of the filters themselves can be found in aligocalibration/trunk/Runs/O3/H1/Scripts/TDfilters/H1DCS_C01_1256655618_plots.