diff --git a/python/digi.py b/python/digi.py
index ed23fa1..46a1d7b 100644
--- a/python/digi.py
+++ b/python/digi.py
@@ -91,7 +91,8 @@ def __init__(self, instance_name = 'hcalDigis') :
         self.avgReadoutThreshold = 4. #ADCs - noise config only
         self.avgGain = 1.2 #noise config only
         self.avgPedestal = 1. #noise config only
-        self.avgNoiseRMS = 2. #noise config only
+        # avg noise set to 0.02PE
+        self.avgNoiseRMS = self.hgcroc.calculateVoltageHcal(0.02)/self.avgGain
         
         # input and output collection name parameters
         self.inputCollName = 'HcalSimHits'
diff --git a/python/hcal_hardcoded_conditions.py b/python/hcal_hardcoded_conditions.py
index 1277c5b..34e77f7 100644
--- a/python/hcal_hardcoded_conditions.py
+++ b/python/hcal_hardcoded_conditions.py
@@ -53,7 +53,7 @@
 
 HcalHgcrocConditionsHardcode.validForAllRows([
     1. , #PEDESTAL 
-    2.0, #NOISE
+    0.02*5/1.2, #NOISE - 0.02 PE with 1 PE ~ 5mV and gain = 1.2
     12.5, #MEAS_TIME - ns - clock_cycle/2 - defines the point in the BX where an in-time (time=0 in times vector) hit would arrive
     20., #PAD_CAPACITANCE - pF
     200., #TOT_MAX - ns - maximum time chip would be in TOT mode