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when making the IRFs (Aeff and sensitivity), the thrown energy histogram that is stored in the SimTel and DL1 files should be used for weighting, rather than the analytic model of the expected spectrum parameters.
This will be less error-prone if we combine simulations that used different:
input spectra
start and ending energy range
core offset distribution
In the DL1 files, the simulation/service/shower_distribution table provides this information as a 2D histogram of thrown events per energy and per offset bin. In each row of the table is the information for each run included in the file, so summing the histograms will produce the final distribution.
Examples
THe location of the histograms in the DL1 format:
An example of combining simulations with different spectral parameters: note that N_sim(E_true) is not a pure power-law, but a combination of several
The text was updated successfully, but these errors were encountered:
Description
In the DL1 files, the
simulation/service/shower_distribution
table provides this information as a 2D histogram of thrown events per energy and per offset bin. In each row of the table is the information for each run included in the file, so summing the histograms will produce the final distribution.Examples
THe location of the histograms in the DL1 format:
An example of combining simulations with different spectral parameters: note that N_sim(E_true) is not a pure power-law, but a combination of several
The text was updated successfully, but these errors were encountered: