ROOT Version: 6.17/01
Platform: linuxx8664gcc
Compiler: gcc version 8.3.1 20190223
Hello,
I have subtracted 2-dimensional background from a symmetric gamma-gamma 2D-histograms using different clipping windows (with values 4, 8, 16 for both the axes).
Now when I take a slice (e.g. on 700 keV gamma ray) using the background subtracted 2D histogram - I get different counts/area under any selected peak in the resulting spectrum.
Now the question is - which clipping window should I trust?
I am attaching a ROOT file. It contains several spectra, for description is given below:
(1) pX700_his2D_M[clipping window] ====> Slice from original 2D-histogram. NOT background subtracted.
(2) pX700_his2DsubRand_M[clipping window]====> Slice from 2D-Histogram from which RANDOM 2D-histogram is subtracted.
(3) pX700_his2Dclean_M[clipping window] ====> Slice from 2D Background subtracted histogram in 2nd description above.
Any help is highly appreciated.
Regards,
Ajay
ClippingWindowAnalysis.root (417.2 KB)