Kara Merfeld, Greg Mendell, Evan Goetz

We wrote a program that calculates the coherence between two channels using the short Fourier transforms used by DetChar and the CW group.  The program then generates plots of the coherence for every 100Hz interval of frequency.  

Ultimately this program will be used to calculate the coherence between any auxiliary channel and the calibrated strain channel, and the code will be used in the Fscan pipeline.  It will upload the plots to the DetChar summary pages every 24 hours, as well as make the raw data available.  
The fft length used in the calculation is determined by the sfts it is given, and no overlap is used.   

For the attached plot, the fft length used is 1800s, and there were 48sfts.