diff --git a/scripts/dcallan.py b/scripts/dcallan.py
old mode 100644
new mode 100755
index 40f821b..50287b0
--- a/scripts/dcallan.py
+++ b/scripts/dcallan.py
@@ -48,16 +48,23 @@ def extract_dcall(f, s):
           s['current']['success_buf'] += 1
         elif 'Using NULL buffer' in line:
           s['current']['failed_buf'] += 1
-    print(s['current'])
+    #print(s['current'])
     return True
   except Exception as e:
     print("read error", inf, e)
     return False
 
+def aggregate_failed_pct(s):
+  k = s['current']['strat']
+  if k not in s['failed_1pct']: s['failed_1pct'][k] = 0
+  if s['current']['success_buf'] < 16500 * 0.99: s['failed_1pct'][k] += 1
+  return True
+
 def extract_folder(f, s):
   return \
     extract_info(f + '/info.txt', s) and \
-    extract_dcall(f + '/log/server-dcall-gstreamer.log', s)
+    extract_dcall(f + '/log/server-dcall-gstreamer.log', s) and \
+    aggregate_failed_pct(s)
 
 def extract(p, s):
   item_count = functools.reduce(lambda acc, prev: acc + 1, os.listdir(p), 0)
@@ -75,7 +82,7 @@ def extract(p, s):
     print(f"{progress}%", end="\r")
   print("done")
 
-state = {'failure': {}, 'per_strat': {}, 'per_interval_res': {}, 'per_circuit_res': []}
+state = {'failed_1pct': {}}
 extract(sys.argv[1], state)
 print(state)