Overall: The main change we are seeing in the LSC and ASC signals with the PR3 and SR3 estimators ON is the lowering of the 1 Hz resonance in ASC, which is known to be a bit of a problem peak.

We've been wanting times within the same lock where we take quiet times with the SR3 and PR3 estimators in various ON/OFF configurations so we can get a better look at possible differences in ISC signals, since the difference we are looking for, if any, is very small and the frequency response changes from lock to lock. We finally were able to get some time on November 24th. I made sure to get two sets of ALL ON times, one at the beginning and one at the end, and then also two sets of ALL OFF times, similarly one at the beginning and one at the end, to get a better idea of what changes between the two are really due to the estimator configurations.

Times:

SR3, PR3 Est ALL ON (one set before & one set after other sets)
start: 1448060052
end: 1448060452

start: 1448063252
end: 1448063616

SR3, PR3 Est ALL OFF (one set before & one set after other sets)
start: 1448060469
end: 1448060977

start: 1448063631
end: 1448063846

SR3, PR3 Est JUST L
start: 1448060995
end: 1448061621

SR3, PR3 Est JUST P
start: 1448061643
end: 1448062049

SR3, PR3 Est JUST Y
start: 1448062067
end: 1448062407

SR3, PR3 Est LP
start: 1448062846
end: 1448063239

SR3, PR3 Est PY
start: 1448062423
end: 1448062828

I used my script /ligo/svncommon/SusSVN/sus/trunk/Common/MatlabTools/estimator_ISC/estimator_isc_comparison.m, to plot ASDs for LSC (CTRL) and ASC (ERR) channels, as well as the LSC CAL channels and ASC diode channels when an ASC channel was made up of more than one diode (ex. INP1 uses REFL A 45I and REFL B 45I). I very quickly realized that the difference between each individual dof and LP or PY ON vs OFF is not enough of a change to be able to accurately say whether there is a difference. So we're just going to look at all estimator dofs ON vs all OFF. These result plots can be found in /ligo/svncommon/SusSVN/sus/trunk/Common/MatlabTools/estimator_ISC/H1/Results/ as revision r12809. On the plots, Light Green 'ON' is next to Dark Green 'OFF' in time, and Light Blue 'ON' is next to Dark Blue 'OFF' in time, so Light vs Dark Green and Light vs Dark Blue are useful for proving drops in noise when the estimator is turned on.

LSC
LSC, LSC-CAL (Length, Length Zoomed in)
- Don't show much improvement
    - Maybe MICH at 1 Hz has improved a bit with the estimators ON
    - PRCL shows slight decrease in noise between 3.5-6 Hz with the estimators ON
ASC
PITCH
REFL Diodes ASC - INP1, CHARD Pitch (would be affected by PR3):
- Don't show much improvement
- INP1 P shows slightly lower noise between 2.5-3.5 Hz
    - Similar to what was seen in INP1 P OUT in August: 86640
- Very small decrease in 1 Hz peak in CHARD
    - ASC-REFL_A_RF45_I_PIT sees a small decrease at 1 Hz while ASC-REFL_B_RF45_I_PIT does not see anything
AS Diodes ASC - MICH, SRC1, SRC2, DHARD Pitch (would be affected by SR3):
- Improvement seen in the 1 Hz resonance by 1.5-2x (except SRC1)
POP Diodes ASC - PRC1, PRC2 Pitch (would be affected by PR3):
- PRC1 P sees slight improvement seen in the 1 Hz resonance

YAW
REFL Diodes ASC - INP1, CHARD Yaw (would be affected by PR3):
- Don't show much improvement
- CHARD Y sees slight decrease betweeen 4-6 Hz with the estimators ON
AS Diodes ASC - MICH, SRC1, SRC2, DHARD Yaw (would be affected by SR3):
- Don't show much improvement
POP Diodes ASC - PRC1, PRC2 Yaw (would be affected by PR3)
- PRC2 Y sees slight decrease betweeen 4-6 Hz with the estimators ON
    - Similar to what was seen in PRC2 Y OUT in August: 86640