BugID:1005

Added chech observation mode.

Appl/CEP/CS1/CS1_Run/src/CS1_Parset.py

 import time
 import LOFAR_Parset
 import math
+import sys
 
 class CS1_Parset(LOFAR_Parset.Parset):
 
@@ -164,6 +165,10 @@ class CS1_Parset(LOFAR_Parset.Parset):
 	if len(subbandIDs) != self.nSubbands:
 	    raise Exception('nSubbands(%d) !=  SubbandIDs(%d).' % (self.nSubbands, len(subbandIDs)))
 
+        if self.getInt32('Observation.nyquistZone') not in range(1,4):
+	    print 'Use nyquistZone 1, 2 or 3'
+	    sys.exit(0)
+
 	sbs = list()
         for sb in range(0, len(subbandIDs)):
             sbs.append((self.getInt32('Observation.nyquistZone')-1)*(self.getInt32('Observation.sampleClock')*1000000/2)  + subbandIDs[sb] * subbandwidth)