... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... Filter pseudo event list with annular regions to create a mask . ... Combine positive/negative masks with the annular regions mask . ... FTOOLS task mathpha to subtract both sets of spectra (one for each annular region ...
... of the annular extraction region, i.e., difference= (TotSA/PosSA)*positive_spec - (TotSA/NegSA)*negative_spec. where PosSA and NegSA are the 'positive' and 'negative' spectrum solid angles, and TotSA is the solid angle in the annular extraction region ...