diff --git a/scripts/checkTrackSelection.py b/scripts/checkTrackSelection.py
index 0a6c955..b02af1e 100644
--- a/scripts/checkTrackSelection.py
+++ b/scripts/checkTrackSelection.py
@@ -3,7 +3,7 @@
 # @Author: Elena Graverini
 # @Date:   2015-10-27 18:26:49
 # @Last Modified by:   Elena Graverini
-# @Last Modified time: 2017-05-03 14:48:55
+# @Last Modified time: 2017-05-03 14:53:14
 
 import ROOT as r
 import os
@@ -73,14 +73,16 @@
     c.Update()
 
     c.SaveAs('%s/%s_fill%s.pdf' % (out_location, det, fill))
+    h_sig.Delete()
+    h_noise.Delete()
     # f.Close()
 
 
 def printADC(f, t_sig, det, fill, stat, step):
     # f = r.TFile(location[det] + '%s.root' % fill, 'read')
     # t_sig = f.Get('STADCTrackMonitor/HitInfo/%s' % layer[det])
-    t_sig.Draw("val%s>>hsig(110,-35, 75)" % val[det], "odinStep==%s" % step, "goff", stat, 0)
-    h_sig = r.gDirectory.Get('hsig')
+    t_sig.Draw("val%s>>hsig%s(110,-35, 75)" % (val[det], step), "odinStep==%s" % step, "goff", stat, 0)
+    h_sig = r.gDirectory.Get('hsig%s' % step)
     r.gROOT.ProcessLine('.X %s/../include/lhcbstyle.C' % os.getcwd())
 
     c = r.TCanvas()
@@ -97,15 +99,16 @@
     label.SetTextSize(0.06)
     label.SetTextAlign(22)
     # label.SetTextColor(r.kWhite)
-    label.AddText('Fill %s' % fill)
+    label.AddText('Fill %s\n' % fill)
     from checkPulseData import get_vmap
-    v_bias = get_vmap(det)[int(step) / 11]
+    v_bias = get_vmap(det)[int(step) / 6]
     label.AddText('V_{bias} = %s V' % v_bias)
     label.Draw('same')
     c.Modified()
     c.Update()
 
     c.SaveAs('%s/%s_odinStep%s_fill%s.pdf' % (out_location, det, step, fill))
+    h_sig.Delete()
     # f.Close()