During the relative power noise measurement, the output of the photodiode was 9.715 V - 9.725 V, or a photocurrent of 49 mA.  The measurement is close to the reference measurement.  A little better above 3 kHz and below 10 Hz.  A little worse in most places elsewhere.  In all places much better than the laser requirement.

The frequency noise measurement was done with the common gain set at 30 dB and the fast gain at 15 dB.  The error signal displays a step function behaviour from 2 Hz to about 20 Hz.  This was evident in the previous two scans performed.  We know that the frequency servo needs some maintenance, as the unity gain frequency was previously measured to be around 200 kHz.  The reference cavity transmission was about 1.84 V when this measurement was performed.

Nothing out of the ordinary for the beam pointing measurement.

During the mode scan measurement the following messages were displayed.
[========================                          ]  48%  5m12s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[========================                          ]  48%  5m10s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[========================                          ]  49%  5m08s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[=========================                         ]  49%  5m06s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[=========================                         ]  49%  5m04s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[=========================                         ]  50%  5m02s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[=========================                         ]  50%  5m00s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[=========================                         ]  50%  4m58s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[=========================                         ]  51%  4m56s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[==========================                        ]  51%  4m54s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[==========================                        ]  51%  4m52s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[==========================                        ]  52%  4m48s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
[==========================                        ]  52%  4m46s / 10m00sNo significant mode found! The roundtrip gouy phase might be wrong.
on during data acquisition.
Traceback (most recent call last):
  File "/opt/rtcds/userapps/trunk/psl/common/scripts/noisereport_v0_7/framebuilder.py", line 245, in get_online_data
    raise FramebuilderError()
FramebuilderError

Received 408 secs data, 214.7 MB.
Generated raw data pack "../../../../../../../../ligo/lho/data/psl/psl_noisereports/2014-09-09/dbb_msc-001.zip".
Generated report "../../../../../../../../ligo/lho/data/psl/psl_noisereports/2014-09-09/dbb_msc-001.pdf".

This is the first time I've seen such messages.  Doing a visual comparison between the modescan from today and last week's scan, there are no noticeably different peaks present in the normalized power vs. frequency plot.  The reported higher mode power is nominally the same at 4.5%, although the number of higher order modes counted is lower in this week's scan (53 vs. 58).  The relative misalignment reported for this week's scan is lower.

A repeat of the modescan measurement did not encounter the same problem(s).  The problem must have been related to something in the data acquisition system.  The second report generated didn't look all that different from the first report.

The ISS relative power noise measurement was done with the gain slider set to 10 dB and REFSIGNAL to -2.03 V.  The diffracted power is reported as ~9.5%.  The output AC levels of both photodiodes A and B is 2.03 V and 2.07 V respectively.  The offset slider is set to 4%.  The out of the loop measurement looks good.  Almost flat from ~1 kHz to 30 Hz.  The low frequency part of the spectrum is better than the reference measurement from about 40 Hz down.  The position plot at the end of the report looks like something is clipping.  We might want to look at this when we have an appropriate time.