Issue39:fix cr energy random seed

ObservationSim/Instrument/Chip/Effects.py

@@ -613,11 +613,11 @@ def selectCosmicRayCollection(attachedSizes, xLen, yLen,cr_pixelRatio,CR_max_siz
     return   CRs[0:cr_event_num];
 
 
-def defineEnergyForCR(cr_event_size):
+def defineEnergyForCR(cr_event_size,seed = 12345):
     import random
     sigma = 0.6 / 2.355;
     mean = 3.3;
-
+    random.seed(seed)
     energys = np.zeros(cr_event_size);
     for i in np.arange(cr_event_size):
         energy_index = random.normalvariate(mean,sigma);
@@ -677,7 +677,7 @@ def produceCR_Map(xLen, yLen, exTime, cr_pixelRatio, gain, attachedSizes, seed=2
     cr_size = selectCosmicRayCollection(attachedSizes, xLen, yLen, cr_pixelRatio, CR_max_size);
 
     cr_event_size = cr_size.shape[0];
-    cr_energys = defineEnergyForCR(cr_event_size);
+    cr_energys = defineEnergyForCR(cr_event_size,seed = seed);
 
     CRmap = np.zeros([yLen, xLen]);