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The x-ray spectral analysis consists of a comparison between the observed pulse height spectrum and a pulse height spectrum calculated using a given spectral model. The model, chosen by the user, is convolved with the instrument and telescope responses.
To obtain the spectral parameters for an x-ray source, several steps need to be followed. For each source:
Plots of the gain distribution, the pulse height distribution,
the data compared to the
model spectra, and of the grids can be generated.