I looked at two runs 7071 and 7078. Good track cuts applied: TCut cGoodVDC = "L.tr.n==1&&abs(L.tr.x)<1."; TCut cGoodAngles = "abs(L.tr.tg_th)<0.1&&abs(L.tr.tg_ph)<0.05"; TCut cTarget = "abs(L.tr.tg_y)<0.1";
I chose the central region of x and y abs(L.tr.x) < 0.2 and abs(L.tr.y) < 0.02
Figure 1: run#7071, shows the effect of good track, x+good trk, y+good trk and (x&y)+good trk cuts, respectively. Figure 2: run#7078
Figure 1
Figure 2