This is the analysis of a quiet stretch of data in SR3 oplev from yesterday. 

I checked to make sure of the following:

a) Alignment sliders have not been moved during this period 

b) There is no actuation to SR3 at this time. 

c) The signal levels on all SR3 quadrants are okay, that is the quadrants are not saturated. 

I am posting here screenshots of plots of:

1) the time series for 16 hrs at 1 sec sampling rate

2) the time series for a 2 hr stretch with 256 Hz sampling from within the 16hr stretch

3) a RIN spectrum of the SUM signal for the 16 hrs sample going down to 10^-3 Hz to 0.1 Hz

4) a RIN spectrum of the SUM signal for the 2 hrs sample going from 0.1 Hz to 100 Hz

5) A spectrogram of the 2 hrs signal showing the broadband noise injections due to the glitches in the laser.

Note:

All data for this analysis is available in /ligo/data/oplevs  at LHO. File name LHO_SR3_before_LD_Fix.mat