Index: trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc
===================================================================
--- trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc	(revision 9309)
+++ trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc	(revision 9312)
@@ -964,5 +964,9 @@
     if (fFormatVersion>6)
         *fLog << "Sampling:     " << fSamplingFrequency << "MHz with " << (int)fFadcResolution << " significant bits" << endl;
-    *fLog << "Samples:      " << fNumSamplesHiGain << "/" << fNumSamplesLoGain << " (hi/lo) * " << fNumBytesPerSample << "B/sample = " << (fNumSamplesLoGain+fNumSamplesHiGain) * fNumCrates * fNumPixInCrate * fNumBytesPerSample/1000 << "kB/Evt" << endl;
+    *fLog << "Samples:      " << fNumSamplesHiGain << "/" << fNumSamplesLoGain << " (hi/lo) * " << fNumBytesPerSample << "B/sample = ";
+    if (fNumCrates>0)
+        *fLog << (fNumSamplesLoGain+fNumSamplesHiGain) * fNumCrates * fNumPixInCrate * fNumBytesPerSample/1000 << "kB/Evt" << endl;
+    else
+        *fLog << (fNumSamplesLoGain+fNumSamplesHiGain) * fNumBytesPerSample << "B/pix" << endl;
     *fLog << "Evt Counter:  " << fNumEvents;
     if (fFormatVersion>8)