This page shows trends of SIM shifts (dy and dz) and twist (dtheta). All quantities are directly taken from pcaf*_asol1.fits files. The units are mm for dy and dz, and second for dtheta. The sudden shifts in the plots were due to fid light drift (see a memo by Aldocroft fiducial light drfit).
The following plot shows the dthera trends classified by the instruments (ACIS-I, ACIS-S, HRC-I, and HRC-S).
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Last Modified: Apr 19, 2017