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Main review page

S5 Qpipeline High-Frequency Review Telecon 4th of September 2008 11:00 Eastern

Agenda and minutes of the S5 Qpipeline High-Frequency Review Telecon for Thursday the 4th of September at 11:00 Eastern time.

Agenda and Contact Info


Action items
  1. Brief overall update
  2. Opening the box
  3. H1H2 analysis
  4. Update on paper draft
  5. Review Status
  6. Planning: targets for LSC meeting
  7. AOB

Contact Info

  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#


Brennan Hughley, Jonah Kanner, Matt Pitkin, Jackie Villadsen
-reviewed H1H2 over the last couple of weeks
-happy with everything that's been done

-cannot close out review in time for LSC meeting
-Michele cannot get sensitivity estimate before LSC meeting
-will try Gaussians but sensitivity estimate can vary for
different signals
-H1H2: no zero-lag triggers above threshold
-distributions consistent
-Q-scans of 6 largest gamma triggers show nothing spectacular
-burst in H1 but not H2 which is strange
-configuration file looks right
-there is now a paragraph in the results section to say that
there is nothing above threshold for H1H2 analysis
-estimate of probability for event >=7.06 is a little high
-yes, but probability estimate is pretty rough and should put too
much weight on this number
-check Q-scans 
-how significant is the fact that there are these 6 loud triggers
with gamma larger than 7, given that this feature does not appear
in the background distribution?
-Brennan estimates it to be ~1/3
-could the large gamma triggers be caused by at a particular time
when, say, the detector is misbehaving?
-the times of the triggers are quite spread out (closest is ~2
-can compare distributions using KS test
-should look to see if loud triggers correspond to times when 
seismic flags are on

-Jonah: astro waveform checks
-no real issues with Qpipeline checks
-parameter files are being checked
-issues with data conditioning and stuff is ok

-DQ flags low priority: check using the right segments
-background triggers were vetoed by Lindy
-scripts for segments have already been checked

-plot scripts: checked and look fine
-difference in scale due to using older trigger file