Displaying report 1-1 of 1.
Reports until 13:36, Friday 10 June 2016
H1 General (Lockloss, PEM, SEI)
david.mcmanus@LIGO.ORG - posted 13:36, Friday 10 June 2016 - last comment - 11:14, Thursday 28 July 2016(27688)
Lock Losses in O1

I had a look at lock loss times and their durations during O1 (only lock losses from nominal low noise). I've had a brief look at a couple of the physical environment channels (H1:PEM-EY_WIND_ROOF_WEATHER_MPH for wind and H1:ISI-GND_STS_ITMY_Z_BLRMS_100M_300M for seismic) to see how they are correlated to these lock losses. There are a few plots I've attached here below. All of the data for these plots are mean minute trends

Plots:

Duty_cycle_noncumulative.pdf  - This is a 3D plot showing the duty cycle for different wind and seismic bins (percentiles)
Duty_cycle_cumulative.pdf   - This is a 3D plot showing the duty cycle when the wind or seismic behaviour is greater than or equal to the given percentiles 
Downtime_wind_seis.pdf  - This is a 3D column plot showing the integrated 'downtime' that results from a lock loss in the given wind and seismic bins (percentiles)
lock_losses.pdf  - This plot shows the number of lock losses per percentile bins, surf (matlab) makes it look a bit weird. 

I've also attached lock_losses.txt which is a list of the times in GPS when the lock losses occur (first column) and their duration in seconds (second column). The durations and loss times are only to the nearest minute unfortunately since I used minute trend data.

Percentiles.txt contains the wind (first row) and seismic (second row) channel values that correspond to 5% intervals starting from the 0th percentile (0,5,10...). These are for the mean minute trends though which are much lower than the maximum minute trends. 

Non-image files attached to this report
Comments related to this report
david.mcmanus@LIGO.ORG - 11:14, Thursday 28 July 2016 (28698)Lockloss

The scripts used to generate these plots are located at: https://dcc.ligo.org/T1600211

Displaying report 1-1 of 1.