Table 1: Mean energy resolution for different epochs.

Date	198 keV	882 keV	1778 keV	2754 keV
After launch	1.82	2.33	2.92	3.87
02/12/31	1.79	2.34	3.18	4.4
Before annealing	1.85	2.47	3.34	4.57
After annealing	1.83	2.32	2.97	3.91