especget filestem=myagn srcexp="((DETX,DETY) IN circle(572,-635,800))"
backexp="((DETX,DETY) IN annulus(572,-635,1600,3200))"
This command line produces the files myagn_src.ds, myagn_bgd.ds, myagn_src.arf, myagn_src.rmf.
The command will take quite a while to run because of the RMF generation stage . A PN observation processed with this command will take roughly twice as long as a MOS observation.