Auto choose closest Fe spectrum

[Vindaar]

Implement automatically choosing the closest calibration run for a given data run (or maybe sum the last and next runs).

In order to make that choice the path to the calibration run file needs to be given when reconstructing data runs. We might want to finally implement the runType flag and if data is selected, the path to the calibration file is necessary.

Part of the reconstruction is in those cases:

• call to createFeSpectrum for the calibration data (can make that mandatory for runType == rtCalibration (introduce enum for run type))
• based on these Fe spectra perform the fit from the reconstruction. Can be done in two ways:
  • [ ] peform the calls from https://github.com/Vindaar/TimepixAnalysis/blob/master/PlottingPython/Plotting/PyS_plotH5data.py#L302-L306 using nimpy (mostly trivial to implement with the current status of it)
  • [ ] redo the fit of the Fe spectrum in Nim making use of either mpfit or nlopt

Maybe implement the first fitting approach first and once that is done go over to the second?

[Vindaar]

The automatic selection of the closest Fe spectrum will probably be superseeded by performing a fit on dependency of the extracted correction factor for #pix or charge on the gas gain. This should result in a roughly linear behavior.

[Vindaar]

The automatic selection of the closest Fe spectrum will probably be superseeded by performing a fit on dependency of the extracted correction factor for #pix or charge on the gas gain. This should result in a roughly linear behavior.

This is what's being done nowadays. The relevant function is the following: https://github.com/Vindaar/TimepixAnalysis/blob/master/Analysis/ingrid/calibration.nim#L1077

Closing this issue.