I roughly (~10%) checked the efficiency for 4 of the peaks from  171025_1222_1355_152EuCloverCal.root.

I checked the peaks at 122, 245, 344, and 1408. The indication is an efficiency of 6.9,  9,   9,8, and 2.6 % for these gamma rays repectively.

Previously the efficiency was 11.1, 7.1, 5.3, and 1.6% . This indicates a reduction in efficiency below ~200 keV (because of YSO) and otherwise there is an increase in efficiency from 40% at 245 keV and up to 65% at 1480 keV.

A more complete analysis will come later.