diff --git a/Tools/process_sensor_caldata.py b/Tools/process_sensor_caldata.py
index d976d31460..89d06f0ede 100755
--- a/Tools/process_sensor_caldata.py
+++ b/Tools/process_sensor_caldata.py
@@ -1138,6 +1138,8 @@ if num_mags >= 1:
 
     if not math.isnan(sensor_mag_0['temperature'][0]):
 
+        mag_0_params['TC_M0_ID'] = int(np.median(sensor_mag_0['device_id']))
+
         # find the min, max and reference temperature
         mag_0_params['TC_M0_TMIN'] = np.amin(sensor_mag_0['temperature'])
         mag_0_params['TC_M0_TMAX'] = np.amax(sensor_mag_0['temperature'])