diff --git a/pycbc/results/pygrb_postprocessing_utils.py b/pycbc/results/pygrb_postprocessing_utils.py
index dea83e196ea..4f36908d7b3 100644
--- a/pycbc/results/pygrb_postprocessing_utils.py
+++ b/pycbc/results/pygrb_postprocessing_utils.py
@@ -30,7 +30,8 @@
 import h5py
 
 from scipy import stats
-import ligo.segments as segments
+from ligo import segments
+from ligo.segments.utils import fromsegwizard
 from pycbc.events.coherent import reweightedsnr_cut
 from pycbc.events import veto
 from pycbc import add_common_pycbc_options
@@ -38,8 +39,6 @@
 
 logger = logging.getLogger('pycbc.results.pygrb_postprocessing_utils')
 
-from ligo.segments.utils import fromsegwizard
-
 
 # =============================================================================
 # Arguments functions:
@@ -374,8 +373,6 @@ def load_data(input_file, ifos, rw_snr_threshold=None, data_tag=None,
 def apply_vetoes_to_found_injs(found_missed_file, found_injs, ifos,
                                veto_file=None, keys=None):
     """Separate injections surviving vetoes from vetoed injections.
-    THIS IS ESSENTIALLY AN EMPTY PLACE HOLDER AT THE MOMENT: IT RETURNS
-    THE INJECTIONS GIVEN IN INPUT, WITHOUT APPLYING VETOES.
 
     Parameters
     ----------
@@ -412,6 +409,28 @@ def apply_vetoes_to_found_injs(found_missed_file, found_injs, ifos,
     found_idx = numpy.arange(len(found_injs[ifos[0]+'/end_time'][:]))
     veto_idx = numpy.array([], dtype=numpy.int64)
 
+    if veto_file:
+        logging.info("Applying data vetoes to found injections...")
+        for ifo in ifos:
+            inj_time = found_injs[ifo+'/end_time'][:]
+            idx, _ = veto.indices_outside_segments(inj_time, [veto_file], ifo, None)
+            veto_idx = numpy.append(veto_idx, idx)
+            logging.info("%d injections vetoed due to %s.", len(idx), ifo)
+            idx, _ = veto.indices_within_segments(inj_time, [veto_file], ifo, None)
+            found_idx = numpy.intersect1d(found_idx, idx)
+        veto_idx = numpy.unique(veto_idx)
+        logging.info("%d injections vetoed.", len(veto_idx))
+        logging.info("%d injections surviving vetoes.", len(found_idx))
+
+        found_after_vetoes = {}
+        missed_after_vetoes = {}
+        for key in keep_keys:
+            if key == 'network/coincident_snr':
+                found_injs[key] = get_coinc_snr(found_injs)
+            if isinstance(found_injs[key], numpy.ndarray):
+                found_after_vetoes[key] = found_injs[key][found_idx]
+                missed_after_vetoes[key] = found_injs[key][veto_idx]
+
     return found_after_vetoes, missed_after_vetoes, found_idx, veto_idx
 
 
@@ -510,7 +529,7 @@ def extract_trig_properties(trial_dict, trigs, slide_dict, seg_dict, keys):
 
     # Sort the triggers into each slide
     sorted_trigs = sort_trigs(trial_dict, trigs, slide_dict, seg_dict)
-    n_surviving_trigs = sum([len(i) for i in sorted_trigs.values()])
+    n_surviving_trigs = sum(len(i) for i in sorted_trigs.values())
     msg = f"{n_surviving_trigs} triggers found within the trials dictionary "
     msg += "and sorted."
     logging.info(msg)
@@ -676,7 +695,7 @@ def construct_trials(seg_files, seg_dict, ifos, slide_dict, veto_file,
 
                 iter_int += 1
 
-    total_trials = sum([len(trial_dict[slide_id]) for slide_id in slide_dict])
+    total_trials = sum(len(trial_dict[slide_id]) for slide_id in slide_dict)
     logging.info("%d trials generated.", total_trials)
 
     return trial_dict, total_trials
@@ -701,8 +720,8 @@ def sort_stat(time_veto_max_stat):
 def max_median_stat(slide_dict, time_veto_max_stat, trig_stat, total_trials):
     """Return maximum and median of trig_stat and sorted time_veto_max_stat"""
 
-    max_stat = max([trig_stat[slide_id].max() if trig_stat[slide_id].size
-                   else 0 for slide_id in slide_dict])
+    max_stat = max(trig_stat[slide_id].max() if trig_stat[slide_id].size
+                   else 0 for slide_id in slide_dict)
 
     full_time_veto_max_stat = sort_stat(time_veto_max_stat)