Index: trunk/psModules/src/objects/pmSourceFitModel.c
===================================================================
--- trunk/psModules/src/objects/pmSourceFitModel.c	(revision 36085)
+++ trunk/psModules/src/objects/pmSourceFitModel.c	(revision 36375)
@@ -59,4 +59,5 @@
     opt->maxTol = 1.00;
     opt->weight = 1.00;
+    opt->nsigma = 5.00;
     opt->maxChisqDOF = NAN;
     opt->poissonErrors = true;
@@ -281,5 +282,11 @@
     // set the model success or failure status
     model->flags |= PM_MODEL_STATUS_FITTED;
-    if (!fitStatus) model->flags |= PM_MODEL_STATUS_NONCONVERGE;
+    if (!fitStatus) {
+	if (isnan(myMin->value)) {
+	  model->flags |= PM_MODEL_STATUS_NAN_CHISQ;
+	} else {
+	  model->flags |= PM_MODEL_STATUS_NONCONVERGE;
+	}
+    }
 
     if (myMin->chisqConvergence) {