COAX analysis dsp parameters

[esleon97]

The COAX detector PSD for Nu24 will rely on an artificial neural network (ANN) complemented by a 10-90 % rise time cut. It follows the method used for COAX detectors in GERDA (see GSTR-18-003, sec 2.1). Here is the procedure on how to produce the necessary dsp parameters for the COAX analysis:

1. Upsample the pole-zero corrected windowed waveform wf_pz_win by a factor of 16. Specific processor used for this can be found here.
2. Smooth out the upsampled waveform by performing 3 moving-average windows of length 48 samples, alternating between the left and the right. Specific processor used for this can be found here.
3. Calculate tp_01, tp_03, tp_05, ..., tp_99 from the smoothed waveform using trapEmax as the waveform amplitude reference value. The search of the various time points has to be done using linear interpolation.
4. Center all the time point values around tp_50.

The input to the ANN is the array of centered time points tp_ann. The 10-90% rise time rt10_90 is also calculated from this array.

[theHenks]

@apmypb Send final results to @esleon97 and do final cross-check

[theHenks]

After discussion with @apmypb and @esleon97 , we can close this