@@ -54,14 +55,16 @@ The current release of the proton response files is based on:
* The RMF and ARF files can be loaded with any X-ray analysis software compliant with the NASA caldb format.
* Since the accuracy of the Geant4 modeling of the proton stopping power degrades below 1 keV (20% at 1 keV reported in the Geant4 Physics Reference Manual), the energy redistribution is modelled from 1 keV to the upper threshold of the instrument X-ray RMF.
* Validity energy range: due to biases at the boundary of the RMF modeling, induced by features in the interpolation because of limited statistics in the simulation, the spectral analysis must be performed within the following intervals:
* WFI: 1.5 - 12 keV
* X-IFU: 1.5 - 7 keV (the limited upper energy threshold is due to the lower statistics achieved in the X-IFU Geant4 simulations because of the intrinsic lower soft proton induced background flux)
* The WFI response files are available with two optical filter configurations:
* noOBF: only on-chip optical filter
* OBF: optical filter on the filter wheel present
### Validity ranges
Due to biases at the boundary of the RMF modeling, induced by features in the interpolation because of limited statistics in the simulation, the spectral analysis must be performed within the following intervals:
* WFI: 1.5 - 12 keV
* X-IFU: 1.5 - 7 keV (the limited upper energy threshold is due to the lower statistics achieved in the X-IFU Geant4 simulations because of the intrinsic lower soft proton induced background flux)
