Amit asked me to write down the basic notes of the tutorial on creating a spectrum which I gave him few days ago. As I thought it might be useful for other people as well, I decided to put it in the trac. However please keep in mind that this is far from being complete, might contain information that is valid only now and that it has not been checked for mistakes.

Ingredients

• energy-estimator
• ganymed-output for data
• ganymed-output for MC
• macro to calculate spectrum

Basic Steps and Rules

1. Prepare ingredients
2. MAKE SURE to
   • use star files produced the same way for data and MC
   • use the same cuts for data and MC
   • use the same disp parametrization for data and MC
   • use the same energy estimator for data and MC
3. optimize energy parametrization
4. run ganymed for data and MC
5. run macro for spectrum