Omicron

O3GK log

Some report on O3GK data processing in detail.

O3GKlog

Installation

The Omicron code is managed on the Virgo SVN and it should be able to be installed by CMT system.
- But when we use the CMT in order to install Omicron, dependency conflict is occurred and we cannot install it correctly.
F. Robinet helped us to install it on the k1sum0 and we can use copy of it on the another Debian 9 systems.
T. Yamamoto had already copied Omicron and the related packages on k1nfs0:/export/virgo/virgosoft.
- So Omicron can be used by mounting NFS area on the Debian 9 systems.
```
> grep virgsoft /etc/fstab
10.68.10.10:/export/virgo/virgosoft /home/controls/opt/virgosoft nfs rw,bf,soft 0 0
```

How to use

Before using omicron, we must set the environmental variables by
- ```
> source ~controls/opt/virgosoft/environment.sh
```
Omicron is available as a command line tool on k1sum0, k1sum1, and another test system of Debian 9.
- There are three ways to use omicron
```
case1> omicron  start_gps  stop_gps  option_file
case2> omicron  segment_file  option_file         ### TY don't know much about this way.
case3> omicron  central_gps  option_file
```
- Some examples of a form of option_file are shown in [1] and [2].
Omicron is available as a GUI launched from MEDM on the client workstations.
- Sitemap -> Commissioning -> Glitch pipeline -> Omicron

Trigger generation for DailySummary

DailySummaryPage uses the trigger files using gwtrigfind for constructing the Omicron summary page.

T. Yamamoto modified gwtrigfind because our computer environment is slightly different from LIGO's one.

In LIGO convention [3], trigger files should be generated in the /home/detchar/triggers
We have only controls user on k1sum0 and another computers.

--- /home/controls/opt/summary-2.7/lib/python2.7/site-packages/gwtrigfind/core.py.bak   2018-10-19 09:12:45.375654000 +0900
+++ /home/controls/opt/summary-2.7/lib/python2.7/site-packages/gwtrigfind/core.py       2019-01-23 18:29:06.224172322 +0900
@@ -161,12 +161,12 @@ def find_detchar_files(channel, start, e
     ifo, name = _format_channel_name(channel).split('-', 1)
     # find base path relative to O1 or O2 formatting
     if start >= OMICRON_O2_EPOCH:
-        base = os.path.join(os.path.sep, 'home', 'detchar', 'triggers')
+        base = os.path.join(os.path.sep, 'home', 'controls', 'triggers')
         tag = etg.upper()
         dirtag = '%s_%s' % (name, tag)
     else:
         epoch = '*'
-        base = os.path.join(os.path.sep, 'home', 'detchar', 'triggers', '*')
+        base = os.path.join(os.path.sep, 'home', 'controls', 'triggers', '*')
         tag = etg.title()
         dirtag = '%s_%s' % (str(channel).split(':', 1)[1], tag)

The Omicron job is automated using crontab on k1sum1. summary_*.txt is for * Hz sampling rate channels.

> crontab -l | grep Omicron
7-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation_segment.sh /users/DET/tools/Omicron/Parameter/summary_2048.txt > /tmp/auto-omicron-2048_segment.log 2>&1
9-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation_segment.sh /users/DET/tools/Omicron/Parameter/summary_1024.txt > /tmp/auto-omicron-1024_segment.log 2>&1
11-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation_segment.sh /users/DET/tools/Omicron/Parameter/summary_512.txt > /tmp/auto-omicron-512_segment.log 2>&1
13-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation_segment.sh /users/DET/tools/Omicron/Parameter/summary_256.txt > /tmp/auto-omicron-256_segment.log 2>&1
3-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation_segment.sh /users/DET/tools/Omicron/Parameter/summary_4096.txt > /tmp/auto-omicron-4096_segment.log 2>&1

When you want to add some channels for the Omicron search,

1) add channel name to DATA CHANNELS line of /users/DET/tools/Omicron/Parameter/summary_*.txt. Please choose appropriate * referring sampling rate.
or
2) add new job to crontab

> crontab -e
5-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation.sh /users/DET/tools/Omicron/Parameter/summary_test.txt > /tmp/auto-omicron.log 2>&1
5-59/15 * * * * env - `cat /users/DET/tools/Omicron/etc/sum1_cron-omicron.env` /users/DET/tools/Omicron/Script/automation.sh /path/to/your_parameter.txt > /tmp/auto-omicron2.log 2>&1

In order to use trigger results on SummaryPage, use same OUTPUT parameters as

OUTPUT DIRECTORY /home/controls/triggers/tmp
OUTPUT PRODUCTS triggers
OUTPUT FORMAT xml
OUTPUT VERBOSITY 0

Finally, we must modify the INI file of DailySummary.

Note for developers

Bug in automation_segment.sh should be fixed.
- Treatment of 0:00:00 : the segment including 0:00:00 maybe separated in segment files. If one of them is shorter than 64 sec, not processed.
- MARGIN is different from the O3GK configuration. In O3GK configuration, GPS_END is set earlier by 30 sec. 30 sec is determined by burst analysis margin.
- Please modify segment if needed.
To share the trigger files with other machines,

rsync -av /mnt/triggers/K1/ /mnt/detfs0/triggers/K1/ > /tmp/cp-omicron.log 2>&1 is required on k1sum1. It is temporary commented out in crontab.

Reference

[1] VIR-0135A-15, Omicron: a tool for detector characterization
[2] VIR-0545C-14, Omicron: an algorithm to detect and characterize transient events in gravitational-wave detectors
[3] LIGO-T1300468, DetChar Trigger Handling Conventions