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Mon Oct 9 01:29:26 2017, gautam, Update, LSC, DRMI Nosie Budget v3.0 7x
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Mon Oct 9 11:55:01 2017, Koji, Update, LSC, DRMI Nosie Budget v3.0
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Mon Oct 9 22:18:34 2017, gautam, Update, LSC, AS55Q Dark Noise
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Tue Oct 10 22:04:06 2017, rana, Update, LSC, AS55Q Dark Noise
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Wed Oct 11 14:42:03 2017, gautam, Update, LSC, AS55Q Dark Noise
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Wed Oct 11 19:31:32 2017, gautam, Update, LSC, AS55Q Dark Noise
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Thu Oct 12 01:50:11 2017, gautam, Update, LSC, AS55Q Dark Noise
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Thu Oct 12 12:17:28 2017, gautam, Update, LSC, AS55Q Dark Noise
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Fri Oct 13 12:26:12 2017, gautam, Update, LSC, AS55Q Dark Noise
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Mon Oct 16 16:01:04 2017, gautam, Update, LSC, AS55Q Dark Noise 
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Tue Oct 17 19:31:53 2017, gautam, Update, LSC, AS55Q Dark Noise 
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Tue Nov 7 17:45:05 2017, gautam, Update, LSC, DRMI Nosie Budget v3.1   
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Tue Nov 7 22:56:21 2017, gautam, Update, LSC, DRMI locking recovered
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Wed Nov 8 00:28:16 2017, gautam, Update, LSC, Laser intensity coupling measurement attempt
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Wed Nov 8 09:37:45 2017, rana, Update, LSC, DRMI Nosie Budget v3.1
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Wed Nov 8 09:59:12 2017, gautam, Update, LSC, DRMI Nosie Budget v3.1
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Wed Nov 15 01:37:07 2017, gautam, Update, LSC, DRMI low freq. nosie improved 
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Thu Nov 16 00:53:26 2017, gautam, Update, LSC, DRMI noise sub-budgets 
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Message ID: 13416
Entry time: Wed Nov 8 09:59:12 2017
In reply to: 13415
Reply to this: 13428
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Author: |
gautam |
Type: |
Update |
Category: |
LSC |
Subject: |
DRMI Nosie Budget v3.1 |
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The Oplev trace is missing for now, as I have not re-measured the A2L coupling since modifying the Oplev loop shape (specifically the low pass filter and overall gain) to allow engageing the coil de-whitening.
The averaging for the white noise TFs plotted is computed using median averaging - I have used a python transcription of Sujan's matlab code. I use scipy.signal.spectrogram to compute the fft bins (I've set some defaults like 8s fft length and a tukey window), and then take the median average using np.median(). I've also incorporated the ln(2) correction factor.
It seems like GwPy has some in-built capability to compute median (and indeed various other percentile) averages, but since we aren't using it, I just coded this up.
Quote: |
why no oplev trace in the NB ?
also, this method would work better if we had a median averaging python PSD instead of mean averaging as in Welch's method.
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