Use utcnow() instead of time.utc()

lib/opc_interface.py

@@ -24,7 +24,7 @@ def get_crosslet_statistics(parent, subband, integration_time):
     crosslets[1, :, :] = crosslets_complex.imag
 
     crosslets = crosslets.tolist()
-    timestamp = time.utc()
+    timestamp = time.utcnow()
     rcu = res['rcus']
     rcus_mode = [rcu[i]["mode"] for i in rcu]