Overview over Track Fits in X-Y plane

type of track	INTERFACE name			routine to calculate chisq
	TrackFitWidth	TrackFitXY	TrackFitX
Line_Type XYTrack_Type	TrackFitWidthLine TrackFitWidthRadius	TrackFitXYLineT TrackFitXYRadiusT	TrackFitXLineW TrackFitXRadiusW	TRKCHI
Line_Type XYTrack_Type		TrackFitXYLineZ TrackFitXYRadiusZ	TrackFitXLineZ TrackFitXRadiusZ	TRKCHIZ

There are 3 types of fits to be called via their INTERFACE. Which SUBROUTINE is executed depends on the type of the FitTrack and whether the track width is provided as a number (time or width) or via a line (ZTrack). Both TRKCHI and TRKCHIZ have different possiblities to calculate the chisq in a row depending on the value of FitType which is read in from TPCinput.txt (default=1):

ROWCHI (FitType=1)

likelihood for the full row; uses parameters: ADC2Electron, pNoise

ROWCHItrunc (FitType=2)

likelihood for a given number of pads (truncated row); otherwise same as ROWCHI

ROWCHIPRF (FitType=3)

chisq for the full row; uses parameters AERR;
if pad response function is used (LPRF=.TRUE.) in addition parameters TrackWidth, PRFdel and PRF are used