reorganises and cleans up some parts of the code

scripts/udp_gen.py

@@ -45,7 +45,8 @@ while True:
     header[16] = t_high & 0xff
     header[17] = t_high >> 8
 
-    num_events = random.randint(0, 243)
+    # num_events = random.randint(0, 243)
+    num_events = 243
 
     # update buffer length
     buffer_length = 21 + num_events * 3
@@ -102,4 +103,4 @@ while True:
     sock.sendto(bytes(tosend), ('127.0.0.1', 54321))
     mv = memoryview(bytes(header)).cast('H')
     print(f'Sent packet {mv[3]} with {num_events} events {base_timestamp}')
-    time.sleep(1)
+    # time.sleep(0.0005)