How to eliminate background counts?

ROOT
1

I have made an histogram and fitted the peaks using the given data. Now, how to eliminate background counts?

ROOT Version: 6.14
Platform: Ubuntu
Compiler: Not Provided

2

You need to use one of the two:

  1. first eliminate the background and then fit your (clean) peaks,
  2. fit your histogram using a fit function which simultaneously models the peaks and the background.

BTW. The TSpectrum class provides some background estimation / elimination methods.

3

fithisto.C (3.7 KB)
I am getting some error.
But i don’t know how to resolve it and the spectrum is shown that is the same as before.
Nothing has happened after adding the code for background part.

4

Unable to execute my code using https://root.cern.ch/doc/master/classTSpectrum.html
Please help me.

5

You can get an estimation of the “background counts” if you subtract the fitted peak areas from the corresponding histogram integrals.

6

Thanks a lot!
I am getting what you are trying to tell me but to show background on my histogram how should i deal with my code that’s the main issue.

7

According to your statement, if i subtract areas of the fitted peak from the histogram integral then i will get the area of the background peaks. but what if i want to calculate the value of background counts for each point in the ascii file.

9

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