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Laser Interferometer Gravitational-Wave Observatory
LIGO Scientific Collaboration Working Group on
BURST MDC Mock Data
This web page contains descriptions of and links to
FRAME files containing mock data for use in LIGO data analysis
Mock Data Challenges (MDCs).
All files are in the
Frame format, made in MATLAB using the
mkframe
command.
At the moment, all datasets consist of one file,
with 1 or 64 seconds worth of data,
with a single ADC channel with name = 'H2:LSC-AS_Q',
16384 samples/sec, format: 'f' = 32-bit floating point.
All files can be obtained in
mdc_data.tar.gz (15 MB).
I'm happy to entertain requests for other mock data files.
Contact Alan Weinstein, ajw@ligo.caltech.edu.
ZEROS:
nothing but zeros.
-
mdc_d1.F (right-click and "Save As..." to download file)
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 1 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682817955
RAMP:
ramp from 0 to 1, over 1 second
-
mdc_d2.F
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 1 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682817955
SINE:
sine wave, frequency 100 Hz, amplitude = 1, 1 second
-
mdc_d3.F
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 1 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682817955
WHITE:
white noise, mean=0, sigma = 1
-
mdc_d4.F
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 64 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682817956
WHITE+BURSTS:
white noise, mean=0, sigma = 1;
PLUS ZM bursts, h_peak = 10. First 10 seconds have no bursts,
remaining 54 seconds have one burst/second (typ duration = 0.1 sec).
-
mdc_d5.F
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 64 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682818131
- Zwerger-Muller SN simulation GW waveforms obtained from
Zwerger / Muller group at MPA-Garching
- Time series:
COLORED:
Colored Gaussian synthetic noise, filtered through E2 IFO response function, in ADC counts.
-
mdc_d6.F
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 64 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682819370
- IFO Response function (ADC/h(strain)) from E2 run:
zeros = [.74 .74 0 0]*2*pi
poles = -[50.35 50.35 12.1 12.1 186]*2*pi
k = -1.16e16 * 1e9 - we arbitrarily increase the sensitivity,
with respect to E2, by 1e9/2000m - to make it interesting!
(Note that this doesn't include the 336usec delay.)
In the following figure, the red line shows the response function
magnitude, computed analytically.
The blue line is the ratio of the PSD of the
FILTERED colored Gaussian synthetic noise
to the unfiltered. If the filtering were perfect,
they'd coincide.
- IFO INVERSE Response function (NOTE: in strain/ADC, NOT ADC/strain as described above!) from E2 run,
as a file with f,Re(RF),Im(RF) triplets:
mdc_e2rf.dat
- Amplitude (sqrt(power)) spectral density of noise,
before and after filtering through IFO response function:
- Amplitude (sqrt(power)) spectral density of noise
as a file with f,a pairs:
mdc_asd1.dat
- Amplitude (sqrt(power)) spectral density of noise, AFTER filtering through
IFO response function, in ADC/rtHz
as a file with f,a pairs:
mdc_asd2.dat
COLORED+BURST:
Colored Gaussian synthetic noise, filtered through E2 IFO response function, in ADC counts,
PLUS one ZM burst with h_amp = 1e-20, about 10 seconds into the file.
-
mdc_d7.F
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 64 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 682819377
- Amplitude (sqrt(power)) spectral density of noise,
before and after filtering through IFO response function, with and without burst:
E2NOISE:
E2 noise (real data), 59 seconds
-
H-657968401.F.n59
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 59 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 657968401
- Amplitude (sqrt(power)) spectral density in ADC/rtHz:
- Amplitude (sqrt(power)) spectral density in h(strain)/rtHz:
(compare with
"official" E2 calibration, and note the factor 1e9 difference
in the y scale!):
E2NOISE:
E2 noise (real data), 512 seconds
-
H-657962625.F.n512
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 512 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 657962625
- There may, or may not, be a SN burst in there!
E5NOISE:
E5 noise (real data), 512 seconds, about 5 minutes into
a 4441-sec lock stretch
-
H-680938537.F.n512
- ADC name = 'H2:LSC-AS_Q'
- 1 frame, 512 seconds, 16384 samples/sec
- format: 'f' = 32-bit floating point
- GPS start time: 680938537
mdc_zeros_1.F: just zeros, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_zeros_64.F: just zeros, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_zeros_512.F: just zeros, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_white_1.F: white noise, mean=0, sigma=1, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_white_64.F: white noise, mean=0, sigma=1, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_white_512.F: white noise, mean=0, sigma=1, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_white_ZM_1.F: white noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_white_ZM_64.F: white noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_white_ZM_512.F: white noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_white_SIN_1.F: white noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_white_SIN_64.F: white noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_white_SIN_512.F: white noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_color_1.F: filtered colored noise, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_color_64.F: filtered colored noise, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_color_512.F: filtered colored noise, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_color_ZM_1.F: filtered colored noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_color_ZM_64.F: filtered colored noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_color_ZM_512.F: filtered colored noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_color_SIN_1.F: filtered colored noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_color_SIN_64.F: filtered colored noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_color_SIN_512.F: filtered colored noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_e2noise_1.F: E2 noise, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_e2noise_64.F: E2 noise, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_e2noise_512.F: E2 noise, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_e2noise_ZM_1.F: E2 noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_e2noise_ZM_64.F: E2 noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_e2noise_ZM_512.F: E2 noise + ZM burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
mdc_e2noise_SIN_1.F: E2 noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 1 seconds, 16384 samples/sec
mdc_e2noise_SIN_64.F: E2 noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 64 seconds, 16384 samples/sec
mdc_e2noise_SIN_512.F: E2 noise + 200 Hz burst, ADC name = 'H2:LSC-AS_Q', 1 frame, 512 seconds, 16384 samples/sec
Relevant links
BURSTS Upper Limit Working Group web page.
Inspiral Upper Limit Working Group web page.
Periodic Sources Upper Limit Working Group web page.
Stochastic Upper Limit Working Group web page.
LIGO home page at Caltech
LIGO home page at MIT
LSC home page
URL: http://www.ligo.caltech.edu/~ajw/bursts/mdc_data/mdc_data.html
This page last modified August 25, 2001.
Questions?
Contact Alan Weinstein.