Overview of DMT Monitors
original Jan 20, 2003 - K. Riles
modified Feb 18, 2003 - P. Sutton
modified Feb 23, 2003 - K. Riles
modified Aug 19, 2004 - K. Riles
modified Oct 21, 2004 - K. Riles
This page provides a brief overview of currently
running or soon-to-be-running DMT monitors. Each monitor provides (or is
supposed to provide) more detailed documentation, accessible from the "spi
page" that monitors the monitors running on the Hanford and Livingston
DMT workstations.
At the bottom of this page are additional links related
to the DMT figures of merit and infrastructure.
Background Monitors under the
Control of the Process Manager
(nominally running continuously during / between data runs)
Performance Characterization (steady-state monitoring):
-
BicoMon (S. Penn) - Displays and records bicoherence quantities
for requested channels & bands.
-
Blrms (E. Daw) - Displays and records band-limited RMS (New_Seis_Blrms
looks only at seismic channels; LXO_ifo_blrms looks at AS_Q) --
Obsolete
-
HistCompr (J. Zweizig) - Histograms filtered data - visible
in DMT Viewer (program called IFO_Hist).
-
LineMonitor (S. Klimenko) - Tracks specified lines in several
IFO channels, also reports detected lines above threshold SNR. Several
different versions typically running, looking at different channels.
-
MultiVolt (D. Sigg) - Monitors line voltage amplitude/phase,
including harmonics.
-
PSLMon / RMSBands / DataQual (J. Zweizig) - PSLMon is comprehensive
suite of tools. RMSBands and DataQual are programs that record band-limited
RMS in selected channels.
-
PulsarMon (G. Santostasi) - Produces figures of merit for the
pulsar search -- NEW!
-
SenseMonitor (P. Sutton) - Estimates seeing range to binary
inspiral of NS-NS system (1.4 solar masses each). Uses strength of 1kHz
calibration line to rescale the open-loop gain and sensing function for
accurate tracking of the interferometer calibration. -- REVISED!
-
StochMon (M. Cenac / B. O'Reilly / J. Whelan) - Produces
figures of merit for the stochastic search. -- NEW!
Transient Phenomena (glitches, state transitions)
-
Absglitch (R. Rahkola/M. Ito) - Soon-to-be-discontinued version
of GlitchMon, allowing for absolute (not strictly adaptive) thresholds. -- Replaced by glitchmon
-
BurstMon (S. Klimenko / A. Sazonov) - BurstMon is a brand-new
monitor that produces three figures of merit relevant to the burst search:
h_rss value at 50% efficiency (strain/sqrt(Hz)); non-stationarity; and
glitch rates. -- NEW!
-
EqMon (R. Rahkola) - Earthquake monitor with dedicated audible
alarm (not enabled as of mid-December 2002). -- Obsolete
-
GlitchMon (M. Ito) - Looks for sudden glitches in hundreds
of channels (now allows for both adaptive and absolute thresholds). Several
different versions running typically, looking at different sets of channels.
-
LockLoss (D. Chin) - Displays and records all lock transitions,
displays IFO state vector in abbreviated form.
-
PSLMon / ZGlitch / DataQual (J. Zweizig) - PSLMon is comprehensive
suite of tools. ZGlitch and DataQual are programs based on PSLMon that
record trigger rates on filtered data channels for exceeding N sigma. Threshold
based on running, weighted mean and standard deviation.
-
PTMon (N. Zotov) - Looks for transients, using a robust algorithm
borrowed from the UGSG.
-
SegGener (J. Zweizig) - Generates "segments" for the meta-database
of "good data" based on the IFO state vector.
-
ServoMon (D. Chin) - Looks for sudden increases in band-limited
power in AS_Q and MC_F. Targeted at violin modes / harmonics, high-frequency
MC_F.
-
ShapeMon (S. Marka) - Looks for channel-hopping via sudden
gross spectral changes (seismic channels for now - may be generalized in
future). Has interface to EPICS with MEDM display on main "site map".
-
SusBands (R. Rahkola) - Temporary monitor for S3 (based on
PSLMon) to monitor excess RMS in the large-optic and mode-cleaner suspension
OSEM sensors. Primarily meant to catch pathological events such as the
quake-induced excitation of side motion seen in the H1 IFO during the S1
run. SusBands will eventually be superseded by a dedicated monitor called
SusMon (B. Stubbs, R. Rahkola). - Replaced by SuspensionMon
-
SuspensionMon (B. Stubbs / R. Rahkola) - Looks for out-of-bounds
behavior in suspensions channels (recall the uncontrolled side motion seen
in H1 during S1, leading to "heartbeat").
-
WaveMon (S. Klimenko) - Looks for correlated glitches
between pairs of data channels, using a robust percentile-based algorithm
for identifying statistically significant correlations.
Data Acquisition / Timing Validation
-
BitTest (J. Zweizig) - Looks for stuck ADC bits and saturations.
-
IRIG-B (S. Marka) - Checks absolute timing with coarse resolution.
-
TimeMon (S. Marka) - Checks relative timing with fine resolution
Miscellaneous
-
SpectrumArchiver (T. Olson) - Records spectra for many data
channels once per hour for retrieval by the DTT.
Background Monitors under Development
(private code running sporadically)
Performance Characterization (steady-state monitoring):
-
CorrMon / DEnvCorr (A. Ottewill) - CorrMon monitors correlations
among data channels, allows for multiple channel regression. DEnvCorr provides
a "cleaned" data channel, e.g,, AS_Q, after regression.
-
DTracker / MTLineMon (A. Ottewill) - Line tracker similar
in function to LineMonitor, but based on multi-taper methods.
Transient Phenomena (glitches, state transitions)
-
BurstMon (S. Klimenko / A. Sazonov) - BurstMon is a brand-new
monitor that produces three figures of merit relevant to the burst search:
h_rss value at 50% efficiency (strain/sqrt(Hz)); non-stationarity; and
glitch rates.
-
MagGlitch (M. Ito / R. Rahkola) - Looks for glitches in magnetometer
channels. - Obsolete
Interactive Monitors and Miscellaneous Tools
(meant for foreground running and stopping on demand)
-
BicoViewer (S. Penn) - Measures bicoherence within
a channel, or cross-bicoherence among 2-3 channels.
-
Listen (J. Zweizig) - Plays a channel on a sound card on
card-equipped workstation.
-
RayleighMonitor (P. Sutton) - Time-frequency display of spectral
power and "rayleighness" - standard deviation of power over mean power
- measures non-Gaussianity.
-
Sigma (A. Kansagra) - Tool for simultaneously displaying
time series, spectra and histograms for a finite time interval.
-
SpecMon (T. Bodiya) - Tool for tracking and histogramming
band-limited RMS for arbitrary channels.
-
TrigDsply (J. Zweizig) - Tool for displaying data (filtered,
if desired) corresponding to known trigger.
Figures of merit
A set of figures
of merit based on DMT monitor information have been put together for
viewing during data runs to assess interferometer performance.
Additional links related to the DMT infrastructure: