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DMT Status and Online DQ Flag Generation

DMT Status and Online DQ Flag Generation. John Zweizig LIGO/Caltech. DMT Overview. h(t) Generation. hoftMon – calibrate IFO response Authors: Jordi Burguet-Castell, Shourov Chatterji, Xavier Siemens Based on LAL h(t) code (used off-line for S5) ‏

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DMT Status and Online DQ Flag Generation

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  1. DMT Status and Online DQ Flag Generation John Zweizig LIGO/Caltech

  2. DMT Overview

  3. h(t) Generation • hoftMon – calibrate IFO response • Authors: Jordi Burguet-Castell, Shourov Chatterji, Xavier Siemens • Based on LAL h(t) code (used off-line for S5)‏ • Latency ~35s from end of data to be processed • Generates DQ flags SCIENCE SV_SCIENCE & LIGHT INJECTION Injection: same as state vector UP SV_UP & LIGHT CALIBRATED SV_UP & LIGHT & (not TRANSIENT)‏ BADGAMMA Calibration is bad (outside 0.8 < gamma < 1.2)‏ LIGHT Light in the arms ok MISSING Data dropped

  4. h(t) Data Availability • h(t) frames written to shared memory every 16s (~51s latency)‏ • Copied direct to qfs file system (additional latency <1s) e.g.: /dmt/frames/hoftMon_H1/H-H1_C00_L2-nnnn/ • Immediately available to local observatory cluster. • rsynch, nds2 or fd to other analysis centers.

  5. Segment Handling • Monitors send raw segments {pid, name, version, start, stop, active} to trigger manager. • Trigger manager (TrigMgr)‏ • Collects segments from all monitors • Writes data to 1-32 output streams • Output as xml file (e.g. /dmt/triggers/DQ_Segments/H‑DQ_Segments-nnnn/)‏ • Starts DB insertion script (dmtdq_seg_insert)‏ • 1 stream, S6segments, 16s xml files, 32s latency. • Scripts to coalesce segment files

  6. On-line Segment Generation • Segments generated by extant on-line monitors • SegGener: Generic condition evaluation. • LightMon: Monitor arm light levels • Monitors to generate segments soon • PlaneMon: acoustic airplane detection (E. Goetz)‏ • SenseMonitor: inspiral range variation (K. Riles)‏ • PSLmon: glitch, RMS based segments (JGZ)‏

  7. Current On-line Segment Types

  8. Status • h(t) generation • Bugs in stability, flag generation found and fixed by Joirdi, in gds-2.12.4 (dol-0.5.3-1)‏ • running since 2/7/2008 • Segment generation • Segments stored and inserted in Segment DB since 3/10/2009. • ~1% not inserted in database immediately – reinserted off-line. • KleineWelle trigger generation • Running – triggers lists written to /dmt • Occasional failures (source unknown: resource leak?)‏

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