From sung@phys.lsu.edu Thu Apr 14 18:24:47 2005
Date: Thu, 14 Apr 2005 17:24:42 -0500
From: Myungkee Sung <sung@phys.lsu.edu>
To: Keith Riles <kriles@umich.edu>
Cc: Gabriela Gonzalez <gonzalez@lsu.edu>
Subject: Bad Calibration DQ

Dear Keith,

Attached below are the lists of bad calibrations for L1 and H1.
I could not get the reasonable list for H2, whose alpha*beta values are 
fluctuating
very close to the physical boundary.
I will try it again when the new calibration model is out for H1 and H2.
Each column of the lists is;

segment#, starting gps time, ending gps time, duration, tag id

where
              tag id = 0 ; bad calibration,      1 ; 1s drop-off in EXC 
channel

Detail explanation on the lists can be found in

http://ligo.phys.lsu.edu/sung/Factors/S4/BadCallibDQ.html

The most from the lists are due to the EXC 1s drop-off,
while there are a few - 8 for L1, 9 for H1 - from shorter glitches 
which calibration could not handle.

The lists are compared with BNS triggers as shown at the bottom of the 
same web page.
The bad calibration - not EXC drop off - found 3 triggers ( two for L1 
and one for H1),
which were not tagged by other DQ flags.

Please let me know if you have any question.

Myungkee


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