Glitch Group S5 Activities Laura Cadonati for the Glitch Working Group LSC meeting, Hanford March...
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Transcript of Glitch Group S5 Activities Laura Cadonati for the Glitch Working Group LSC meeting, Hanford March...
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Glitch Group S5 Activities
Laura Cadonati for the Glitch Working Group
LSC meeting, HanfordMarch 21, 2006
G060071-00-Z
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S5 activities
The Glitch Group continued commitment in S5:» Off-site shifts» 2 weekly teleconferences » participation at S5-run-coordination and DetChar teleconferences.
Goals: » A quasi-online assessment (3-4 days delay) of transient features and correlation as the
run proceeds, using online tools developed over the past year. » Feedback to commissioning.» veto definition for online analysis (early stages).
Glitch-work related talks at this LSC meeting:» John Zweizig – S5 Data Quality (next talk)» Shourov Chatterji - Q Scan & Applications to Detector Characterization (this afternoon)» Jake Slutsky - S4 AS_I Veto for Inspiral Analysis (wed morning)» Shantanu Desai – S5 Loud Block-Normal Triggers & the Event Display (wed afternoon) » Erik Katsavounidis - S5 KleineWelle Glitch Studies (wed afternoon) » Soma Mukherjee - S5 Offline NoiseFloorMon Studies (wed afternoon) » Duncan Brown - S5 Online Inspiral Glitch Triggers (wed afternoon)
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Tools and Methods
Scan of loudest events Auto-correlogram and cross-correlogram of
triggers from different channels Standard veto search (Q-)spectrograms
BurstMon – DMT monitor for data “burstiness”, F.O.M.s (S. Klimenko) BlockNormal – loud events, above fixed threshold (S. Desai) KleineWelle – transients on a variety of aux channels (L. Blackburn) InspiralMon – 10 loudest BNS candidates/day (D. Brown) Event Display - see Shantanu Desai’s talk Q-scan – see Shourov’s Chatterji’s talk NoiseFloorMon – slow non-stationarity after line and transient removal (S.
Mukherjee)
Tools
The trigger production is automatized (DMT, ONASYS) Post-processing is at various levels of automatization (~1 day response) Interpretation in the hands of shifters
Analysis methods
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S5 off-site glitch shifts
E-notebook:http://www.lsc-group.phys.uwm.edu/glitch/investigations/s5index.html
Shift report:http://www.ligo.mit.edu/~cadonati/S5/glitch/glitch_report-LC-20060309-20060312.html
Weekly report:http://www.ligo.mit.edu/~cadonati/S5/glitch/WeeklyDC_20060305-20060312.html
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Participation
The next slides some of the many features so far identified in S5 data.
Plots and considerations are drawn from the work of several members of the glitch investigation team.
A. Di Credico, L. Blackburn, L. Cadonati, S. Chatterji, J. Dalrymple, S. Desai, J. Garofoli, G. Gonzalez, A. Gretaarson, E. Katsavounidis, S. Klimenko, S. Mukherjee, F. Raab, K. Riles,
P. Saulson, P. Shawhan, J. Slusky, M. Zanolin, J. Zweizig
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The Worst Glitching is at Low Frequency
L1 H1
H2 H1
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H1: pre-post commissioning
Day 1-103 :before commissioning break
Day 110-128 : after commissioning break
30-60 sec before lock loss
0-30 sec before lock loss0-30 sec before lock loss
30-60 sec before lock loss
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Veto studies are in early stages
PRC_CTRLtriggers
PRC_CTRLGood veto for Higher-freq eventsIn all 3 ifos
DARM_ERRtriggers
Day 1-103 :before commissioning break
Day 110-128 : after commissioning break
PRC_CTRLtriggers
H1
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H1 auto-correlation
This effect comes and goes, not microseismic (see e.g. march 3-4)
Auto correlogram for low significance triggers March 9, high microseismic
Day 1-103 :before commissioning break
Day 110-128 : after commissioning break
Auto-correlograms for high significance triggers (>35)
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H1 ASC-ETMX,Y_P
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H1 glitchiness often seen in magnetometers
100 sec+ of very noisy data producing many "inspiral glitches" during Mar 4, 2:14 UTC, with glitches having a very weird structure, concentrated in narrow ~200 Hz freq band
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H2 - ~ 6 sec periodicity
H2 jan 4Autocorrelogram for low significance triggers (>10) high microseismic
Always seen in low-significance auto-correlograms
Since the maintenance, they show up in loudest event scan
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H2
pix
el f
ract
ion
H2
freq
uen
cy
Microseismic (0.1-0.3Hz)
Anthropogenic (0.3-1Hz)
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H2 autocorrelations
Day 1-103 : before commissioning break
Day 110-128 : after commissioning break
Auto-correlograms for high significance triggers (>35)
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H2 glitches (examples)
This appears in the inspiral search; shows in other channels but nowhere as loud!
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light dips
ASC-QPDY_DC
Also showing in AS_I, POB_Q, POB_I, PRC_CTRL, REFL_Q, AS_DC, MICH_CTRL, WFS2 …
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H1 and H2
H2 when H1 is not locked H1 when H2 is not locked
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H1-H2 coincidence excess
A big transient seen in all magnetometersand volt-meters
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L1 autocorrelations
March 11Average microseismic Feb 14 – high seismic
Structures show in low-significance auto-correlogramsBut not in high-significance ones
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Day 1-103 : before commissioning break
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L1 – seismic
15 minutes before a train…
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L1 – planes and helicopters
seconds
seconds
BlockNormal outlier
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Conclusions
The glitch group is finding lots of features, the limit is only manpower.
The shift system is a way to do science monitoring offsite and learn about our data and provide feedback to commissioning/run coordination.
Contribution/help is welcome!