Fit of newly re-processed ground calibraion data

We generate new pha files using batgse2dph and batbinevt. There are three major changes from previous ones. One is that we applied a energy conversion, that is, more precise energy conversion. Second, we made a correction of absorption coefficient. The increase of absorption affected the energy dependence of exponential tail. If we turn on the exponential component in our DRM, it would change a spectral shape slightly in low energy region. The last one is that we fixed a calculation for mask tile edge effect. It mainly affects on thenormalization and will improve the angular response.

Coarse Grid runs :

Far Field runs :