From rrahkola@darkwing.uoregon.edu Thu Mar 10 13:14:43 2005
Date: Thu, 10 Mar 2005 10:14:38 -0800 (PST)
From: Rauha J Rahkola <rrahkola@darkwing.uoregon.edu>
To: Keith Riles <kriles@umich.edu>
Cc: David Shoemaker <dhs@ligo.mit.edu>
Subject: earthquake deadtime

Hi Keith, David,
Here's what I found out about S4 so far.

Lockloss deadtime initiated by earthquakes* from 2/22 - 3/09:
H1	1553min	(of 4687min**)	-- 33.1% of total deadtime
H2	 724min (of 4860min**)	-- 14.9% of total deadtime
L1	1242min (of 7150min**)	-- 17.4% of total deadtime

*as determined by e-log or eqMon entries.  Time window for coincidence was
[-3min,+1min] wrt the earthquake entry.  Deadtime was determined as time from
lockloss (LockLoss_StateVector<2) to regaining science mode
(LockLoss_StateVector=4).

**Total deadtime determined from cumulative science mode segments of 300sec or
longer (i.e. daily conlog lists).

Take care,
Rauha