[Wed May 23 19:54:47 2012] Detection parameters:
  Position = (394.5, 182.3) = 4 33 3.73 -13 23 2.5
  Extent = 10.9" x 10.9", rotation angle = 0 degrees
  Source counts = 119.6 +/- 21.8
  Background counts = 142.1
  Rate = 0.002 +/- 0.0004

[Wed May 23 19:54:47 2012] Off-axis axis estimate = 10.93'
[Wed May 23 20:04:59 2012] Using EEF radius (= 11.89 ")to estimate initial spatial extent for simple fitting
[Wed May 23 20:04:59 2012] Initial guess for spatial extent in simple fitting = 11.89"
[Wed May 23 20:04:59 2012] source mask rpix=2.7, npix_max = 41, mask sum = 49, frac = 1.171
[Wed May 23 20:04:59 2012] Giving source the simple spatial ID 72 for pass 0, mean size = 11.89"
[Thu May 24 08:16:35 2012] fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_src72.ximg exists
[Thu May 24 08:16:35 2012] fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_src72_1.ximg exists
[Thu May 24 08:16:35 2012] Fit fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_src72 appears to have run properly
[Thu May 24 08:16:37 2012] fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_tfrozen_src72.ximg exists
[Thu May 24 08:16:37 2012] Warning: poor agreement between model and actual number of counts may be indicative of a poor fit in csv/fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_tfrozen_src72.csv
[Thu May 24 08:16:37 2012] fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_tfrozen_src72_1.ximg exists
[Thu May 24 08:16:37 2012] Warning: poor agreement between model and actual number of counts may be indicative of a poor fit in csv/fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_tfrozen_src72.csv
[Thu May 24 08:16:37 2012] It looks like the fit did not converge
You should probably delete fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_tfrozen_src72_1.ximg
Either tweak this fit manually starting from fullrun_pn_xmm0506260301_pi300-10000_cl_pass0_tfrozen_src72.ximg or adjust the simplespatial fit parameters in $XASSIST/data/missions/*/*/spatial.dat and re-run simplespatial fitting after setting file recreation parameter to yes