Index: fact/tools/rootmacros/DrsCalibration.C
===================================================================
--- fact/tools/rootmacros/DrsCalibration.C	(revision 12367)
+++ fact/tools/rootmacros/DrsCalibration.C	(revision 12367)
@@ -0,0 +1,65 @@
+
+
+float getValue( int slice, int pixel,
+	vector<float> &drs_basemean,
+	vector<float> &drs_gainmean,
+	vector<float> &drs_triggeroffsetmean,
+	UInt_t RegionOfInterest,
+	vector<int16_t> AllPixelDataVector,
+	vector<int16_t> StartCellVector
+){
+	const float dconv = 2000/4096.0;
+
+	float vraw, vcal;
+
+	unsigned int pixel_pt;
+	unsigned int slice_pt;
+	unsigned int cal_pt;
+	unsigned int drs_cal_offset;
+
+	// printf("pixel = %d, slice = %d\n", slice, pixel);
+
+	pixel_pt = pixel * RegionOfInterest;
+	slice_pt = pixel_pt + slice;
+	drs_cal_offset = ( slice + StartCellVector[ pixel ] )%RegionOfInterest;
+	cal_pt    = pixel_pt + drs_cal_offset;
+
+	vraw = AllPixelDataVector[ slice_pt ] * dconv;
+	vcal = ( vraw - drs_basemean[ cal_pt ] - drs_triggeroffsetmean[ slice_pt ] ) / drs_gainmean[ cal_pt ]*1907.35;
+
+	return( vcal );
+}
+
+size_t applyDrsCalibration( vector<float> &destination,
+	int pixel,
+	vector<float> &drs_basemean,
+	vector<float> &drs_gainmean,
+	vector<float> &drs_triggeroffsetmean,
+	UInt_t RegionOfInterest,
+	vector<int16_t> AllPixelDataVector,
+	vector<int16_t> StartCellVector
+){
+	destination.clear();
+	const float dconv = 2000/4096.0;
+	float vraw, vcal;
+	unsigned int pixel_pt;
+	unsigned int slice_pt;
+	unsigned int cal_pt;
+	unsigned int drs_cal_offset;
+
+	pixel_pt = pixel * RegionOfInterest;
+
+
+	for ( unsigned int sl = 0; sl < RegionOfInterest; sl++){
+		slice_pt = pixel_pt + sl;
+		drs_cal_offset = ( sl + StartCellVector[ pixel ] )%RegionOfInterest;
+		cal_pt    = pixel_pt + drs_cal_offset;
+
+		vraw = AllPixelDataVector[ slice_pt ] * dconv;
+		vcal = ( vraw - drs_basemean[ cal_pt ] - drs_triggeroffsetmean[ slice_pt ] ) / drs_gainmean[ cal_pt ]*1907.35;
+
+		destination.push_back(vcal);
+	}
+
+	return destination.size();
+}
Index: fact/tools/rootmacros/DrsCalibration.h
===================================================================
--- fact/tools/rootmacros/DrsCalibration.h	(revision 12367)
+++ fact/tools/rootmacros/DrsCalibration.h	(revision 12367)
@@ -0,0 +1,23 @@
+#ifndef __DRS_CALIBRATION__H
+#define __DRS_CALIBRATION__H
+
+float getValue( int slice, int pixel,
+	vector<float> &drs_basemean,
+	vector<float> &drs_gainmean,
+	vector<float> &drs_triggeroffsetmean,
+	UInt_t RegionOfInterest,
+	vector<int16_t> AllPixelDataVector,
+	vector<int16_t> StartCellVector
+);
+
+size_t applyDrsCalibration( vector<float> &destination,
+	int pixel,
+	vector<float> &drs_basemean,
+	vector<float> &drs_gainmean,
+	vector<float> &drs_triggeroffsetmean,
+	UInt_t RegionOfInterest,
+	vector<int16_t> AllPixelDataVector,
+	vector<int16_t> StartCellVector
+);
+
+#endif