1 files changed, 7 insertions, 2 deletions
diff --git a/src/dc.c b/src/dc.c
index 1882a0e..6d538b4 100644
--- a/src/dc.c
+++ b/src/dc.c
@@ -37,6 +37,11 @@
  *     number in any position of a 93 ns sliding window applied to the PMT time
  *     spectrum of the event.
  *
+ * Note: We use the pt1 time which is the ECA + PCA without the charge walk
+ * applied since the cut may fail to tag an event which consists mostly of
+ * electronics noise where the charges are too low to apply the PCA walk
+ * calibration.
+ *
  */
 int is_itc(event *ev)
 {
@@ -48,9 +53,9 @@ int is_itc(event *ev)
     nhit = 0;
     for (i = 0; i < MAX_PMTS; i++) {
         /* Only loop over hit PMTs with good calibrations. */
-        if (!ev->pmt_hits[i].hit || ev->pmt_hits[i].flags) continue;
+        if (!ev->pmt_hits[i].hit || ev->pmt_hits[i].pt1 < -10) continue;
 
-        t_array[nhit++] = ev->pmt_hits[i].t;
+        t_array[nhit++] = ev->pmt_hits[i].pt1;
     }
 
     /* Sort the times. */