S4 LIGO-GEO Burst Review Committee Special Meeting 01 May 2008 10:00 Eastern
Agenda and minutes of the special LIGO-GEO S4 Bursts Review telecon, held Thursday 01 May 2008.
Agenda and Contact Info
- Discussion of segment lists.
InterCall telecon service: USA (toll-free): 1-866-616-1738 UK (toll-free): 0800 073 8914 Italy (toll-free): 800-906-494 Germany (toll-free): 0800-1014-907 participant code: 251 288 9495#
AttendanceLaura Cadonati, Siong Heng, Patrick Sutton (minutes), Keith Riles, Sergei Klimenko, Igor Yakushin.
- Need to exclude the first 10 days of bad GEO data from the iWB-CP analysis. (This was excluded from the cWB analysis from the beginning, which was run ~6 months after iWB-CP.)
- Note that the loudest event was not in these 10 days of bad data.
- Igor: The intersection of the category 1,2 lists for cWB gives ~259 hr, so the 259.9 hr stated looks correct.
- Siong: The iWB segment list still includes small amounts of segments not used by cWB even after chopping the bad ten days.
- Sergei: Need to apply the 10-day cut to Laura's triggers. Then correct livetime accordingly for Fig 4, table 1, background rate plot. Some DQ flags were added later, and so not present in the iWB run.
- cWB: cat 1 and 2 flags applied during trigger production runs.
- iWB: cat 1 flags applied during trigger production runs, cat 2 flags applied after, during post-production.
- Few % data acquisition overflows in GEO were identified later.
- Igor and Sergei to collect segment lists, compute livetimes.
- Generate new trigger tables for iWB-CP (Siong), cWB (Igor and Sergei), excluding triggers as appropriate.
- Regenerate figures and tables: efficiencies (Laura), others (Siong).
- Laura has reviewed scripts (including efficiency sigmoid fits, rate vs. strength plots) used for S4 LIGO-only production. She will re-run these to apply cuts, compare to Siong's results. Should duplicate and verify Siong's results.
- Igor will send link to cWB efficiency script.
- Review scripts used to make figures as well as production codes.
- Sanity check is to look at outliers: can catch gross mistakes.