LIGO Document T1700041-v1

Timing Witness Signals Indicate Trustworthy Timing for Candidate G270580

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T - Technical notes
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As an extra precaution, we examined the timing witness signals to ensure that the aLIGO datastreamís timing was perfect around G270580, observed at 1168950677= Fri Jan 20 12:30:59 UTC 2017. We found that the DuoTone witness indicated excellent timing performance on the sub-microsecond level and the IRIG-B signals indicated precise second decoding.
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