Abstract:

  cd ../segments
  ./getsegs
  cd ../DataValid
  ---> edit $Site=LLO
  ./scanL3
  ---> edit $Site=LHO
  ./scanL3
  ./summarize

Files in this directory are used to find dataValid errors in L3 RDS frames.
10M second data segments are searched for dataValid error and then a summary 
is produced. The scanL3 perl script is used to perform the preliminary scan
on all 10Msegment from the time specified internally until the current time. 

scanL3 works as follows:
  A) A list of locally accessible files is produced using LSCdataFind. The 
     output is filtered to select the frames on spinning media (the file
     names containing '/archive/frames' are removed).

  B) The DMT "FrTest -daqerr" program is used to acan all the files in the
     file list produce in step (A). The output has lines with "FrTest: Opened" 
     to indicate the files processed and potentially some lines indicating
     Daq Errors.

  C) All lines produced by the FrTest other than those listed in (B) are 
     deleted using $filter.

The resulting file is summarized using the summarize perl script. summarize
parses the 10Ms output files produced by scanL3 and
  A) discards all file names not associated with a Daq Error
  B) Uses dvTest (source in ../dvTest/dvTest.cc) to dump out non-zero dataValid
     slices.
  C) Merges overlapping segments with the same Channel and dataValid code.
  D) prints one line for each remaining segment with
     1) GPS start time of frame
     2) GPS end time of frame
     3) DataValid code
     4) Channel name
  E) filters out science morde segments with segfilt.