40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log  Not logged in ELOG logo
Entry  Tue Aug 11 16:13:28 2015, Eve, Update, General, Gaussianity tests 
    Reply  Sun Aug 16 23:26:40 2015, Eve, Update, General, Gaussianity tests Gaussianity_noc1.pngGaussianity_noc1.png
Message ID: 11511     Entry time: Sun Aug 16 23:26:40 2015     In reply to: 11494
Author: Eve 
Type: Update 
Category: General 
Subject: Gaussianity tests 

I've continued to work on my Gaussianity tests for S5 L1 data. 

Following the statistical measure in Ando et al. (2003), I've calculated the Laguerre coefficient, c2, for all frequencies present in my S5 L1 PSD as a metric of Gaussianity. When c2 is zero, the distribution is Gaussian. A positive c2 corresponds to glitchy noise, while a negative c2 suggests stationary noise.

Below is a plot displaying variation in c2 for this PSD:

By observing the c2 value and histogram of distribution of various PSD values at a given frequency, we can elucidate statistical differences in the Gaussian nature of noise at that frequency which are unclear in the standard PSD.

Attachment 1: Gaussianity_noc1.png  197 kB  | Hide | Hide all
Gaussianity_noc1.png
ELOG V3.1.3-