GraceDB outage

GraceDB will be going down for emergency maintenance this afternoon (15:30 CST) for up to 3 hours. Information below from the DASWG list.


Incident Type
--
Emergency Maintenance

Start Date and Time
—
2015-11-23 15:30 CST (UTC-5)

End Date and Time
--
2015-11-23 ~18:30 CST

Service(s) Affected
—
GraceDB needs to be temporarily shut down in order to recover backup data.
The service will be unavailable during the outage."

DAQ CRC error on h1isiham3

Patrick reported that h1isiham3 is seeing a single CRC error Link

Last Tuesday I reconfigured the DAQ to trend these CRC channels since we have been seeing them recently. This ISIHAM3 is the first error seen since Tuesday. The error was raised yesterday evening 

Nov 22 2015 17:08:43 PST

The GDS-TP screen for ISIHAM3 shows no loading events at this time (system has been stable since Oct 20th).

This error is saying that for one 1/16th of a second block of data sent from ISIHAM3 to the DAQ data concentrator, the CRC check sum for the data block as computed by the front end did not match that computed by the data concentrator.

The next time H1 is out of observation mode, the CRC can be reset with the "DAQ clear accumulated CRC" button on the CDS overview screen.

 

Observing 19:25 UTC

Lockloss 18:52 UTC

No obvious cause.  VerbalAlarms stated that ITMy was saturating simultaneously with lockloss.  Lockloss tool plots attached.

Analysis of X03 and X02 data using SLM Tool

SudarshanK, RickS

The plots attached is looking at the calibration line at 332 Hz at both H1 and L1 for X03 and X02 data for a single day (24 hr period). The data was filtered using GDS state vector greater or equal to 32767. The residual plots between X03 and X02 are auto-ranged to include all the points and the residual are pretty small for both H1 and L1

The linked matlab figure includes all 9 days worth of data and all plots are autoscaled again. The residuals are very small, except for a few outliers that are all, or mostly all, in the X02 data, not the X03 data. So, from the perspective of our SLM tool analysis, it looks like the X03 frames are an improvement and the GDS/Pcal calibration ratios at the ~330 Hz lines are very stable, near or at the 1% level.

Optical Lever 7 Day Trends

Attached are 7 day trends of OpLev pitch, yaw, and sum for all active H1 oplevs.

New GDS calibration filters with 61 microsecond advance

An alog describing the new GDS calibration filters has been posted to the LLO alog #22939.

Upconversion so far in O1

The plots being presented here were made by an upconversion/downconversion finding tool called NCOR.  An explanation of the tool and how to interpret the resulting plots can be found HERE.

To make the plots presented in this post all "analysis-ready" lock times of O1 have been included.  That is all data from Sept. 14th - Nov. 22nd when the "analysis-ready" flag was active.  Each point in these plots is 32 seconds of data.  In general all 60 Hz harmonics have been notched out, as well as the violin mode peaks in the higher frequency bands.  Robert Schofield has given me valuable help with the analysis, including channels to look at, and the list of channels searched at both sites can be found here: LHO     LLO .

Some of the most interesting upconversion bands are shown below:

.1 - .3 Hz -> 55 - 65 Hz

LHO     LLO

.1 - .3 Hz -> 85 - 110 Hz

LHO     LLO

.1 - .3 Hz -> 50 - 200 Hz

LHO     LLO

.3 - 1 Hz -> 55 - 65 Hz

LHO     LLO

.3 - 1 Hz -> 10 - 50 Hz

LHO     LLO

.3 - 1 Hz -> 85 - 110 Hz

LHO     LLO

.3 - 1 Hz -> 50 - 200 Hz

LHO     LLO

10 - 30 Hz -> 85 - 110 Hz

LHO     LLO

30 - 50 Hz -> 85 - 110 Hz

LHO     LLO

30 - 50 Hz -> 121 - 200 Hz

LHO     LLO

30 - 50 Hz -> 1000 - 2000 Hz 

LHO     LLO

The directories with the full results, including all band-pairings, can be found here: LHO     LLO .

I did search for downconversion as well (from the 700 - 900 Hz band and the 700 - 1200 Hz band) but I did not find too much of interest.  Those results can be seen in the full results directories.  If anyone has any specific frequency bands or channels they would like looked at I am happy to analyze them.

Ops Owl Shift Summary

TITLE:   11/23 Owl Shift 08:00-16:00UTC (00:00-08:00 PST), all times posted in UTC

STATE Of H1: Observing

SUPPORT:

LOCK DURATION:

INCOMING OPERATOR: Travis

END-OF-SHIFT SUMMARY: Other than one lockloss, it's been a quiet night. Hardly any wind. No noticable seismic activity in EQ band. Useism ~2e-1 um/s.

 

ACTIVITY LOG: See alog23653 and comments therein.

Laser Power

In response to the behaviour of the ISS diffracted power at Livingston (https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=22928)
the attached plots are generated.  In short, the large fluctuations seen at Livingston do not appear to be present.

Lockloss 11:54 UTC

Cause is unclear. USGS reported a 4.9M earthquake in South of Africa at 11:18 UTC. Terramon predicted the R-wave arrival time to be 4:40 UTC with 0.0404561 um/s. That shouldn't have dropped us out of lock though. ASC signal and tidal looked stable on the FOM before the lockloss. Wind speed ~2mph.

Owl Shift Transition

11/23 OWL Shift 08:00-16:00 UTC (00:00-08:00 PST)

Out going Ops: Patrick

Quick Summary: I noticed DHARD P amplitude was higher than usual relative to others but nothing seems to be going wrong. Turns out the scaling on the FOM has changed, probably when Patrick restarted the FOM on Friday (alog23598). I changed both DHARD P and Y scaling to (-4000,4000) just for a peace of mind.

Ops EVE End Shift Summary

TITLE: 11/22 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC

STATE Of H1: Observing @ ~ 78 MPc.
SHIFT SUMMARY: Had some trouble relocking after the earthquake again. Three SUS ETMY saturation since. No evidence of RF45 noise. Seismic and winds unchanged.
INCOMING OPERATOR: Nutsinee
ACTIVITY LOG:

02:21 UTC Rick S. leaving site

Observing

There is a blue box with the number 1 in it under the CRC column for H1ISIHAM3 on the O1 CDS detailed overview. I'm not certain what this means. Screenshot attached.

Relocking sequence:

Had to move both ETM and TMS for both arms to lock on green. Took a long time.
Stopped in CHECK_IR. IR not really found. Adjusted H1:ALS-C_COMM_VCO_CONTROLS_SETFREQUENCY and H1:ALS-C_DIFF_PLL_CTRL_OFFSET.
Modes look bad and flashes are low in power on LOCK_DRMI_1F
Starting initial alignment
Had to adjust ETMS to lock arms on green
Moved PR3 to slightly improve COMM beatnote
Done initial alignment
Had to adjust ETMY in Pitch to lock on green
Stopped at ENGAGE_ASC_PART3. Lowered diffracted power.
Had to rerequest READY_FOR_HANDOFF for OMC_LOCK node at DC_READOUT_TRANSITION. Got 'wrong node?' notification. Rerequested READY_FOR_HANDOFF. No change.
Put OMC_LOCK node to auto
It went back through the sequence and got to READY_FOR_HANDOFF
The ISC_LOCK guardian went on. While it was at INCREASE_POWER I put the OMC_LOCK node back to managed.
Got 'node OMC_LOCK: STOLEN (by: USER)' notifications on ISC_LOCK guardian.
Stopped at engage ISS second loop
Engaged ISS second loop by hand

Attempt to remanage OMC_LOCK node:
Put ISC_LOCK node to manual
Selected INIT for ISC_LOCK node
Got oh no it is unlocked voice, but it wasn't
Selected ENGAGE_ISS_SECOND_LOOP for ISC_LOCK node
Put ISC_LOCK node back to auto
Requested NLN for ISC_LOCK node

Made it to NLN!

Lock loss

Spike to ~ 0.8 um/s in the earthquake band.

Ops EVE Mid Shift Summary

Still locked and observing. No change in wind or seismic. A number of SUS ETMY saturations. These do not appear to be reflected in RF45 noise. The verbal alarms script is indicating CS temperature is low, but I don't see any alarms on the FMCS overview.

Restarted video4

The strip chart was periodically stopping and starting.

Ops EVE Beginning Shift Summary

TITLE: 11/22 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC

STATE Of H1: Observing @ ~ 76 MPc.
OUTGOING OPERATOR: Travis
QUICK SUMMARY: 
From the cameras:
The lights are off in the LVEA.
The lights are off in the PSL enclosure.
The lights are off at mid X.
I can not tell if the lights are on or off at mid Y.
The lights are off at end X.
The lights are off at end Y.

The 0.03 - 0.1 Hz (earthquake) seismic band is between ~ 0.01 and 0.04 um/s.
The 0.1 - 0.3 Hz (microseism) seismic band is between ~ 0.09 and 0.4 um/s.

The winds are between ~ 0 and 10 mph.

The ISI blends are on Quite_90.

From pinging:
CDS WAP is off at the LVEA.
CDS WAP is on at mid X.
CDS WAP is on at mid Y.
CDS WAP is off at end X.
CDS WAP is off at end Y.