TK:        The kaon time
TPI:       THE pion time
ICTPI:     -1 for no tpi
            0 for tpi for ttpat
            1 for tpi from ictime
ETG:       The pion kinetic in the target
RTG:       The pion range in the 
TGX, TGY:  The kaon decaying position in x-y plane, in cm unit
TGZ:       The kaon decay position in r-z plance, in cm unit
EK:        The kaon energy deposit in the target
ITGQUALT:  0 OK
           1 no pion track but the kaon cluster is at a target edge
           2 no pion track along the swath
           3 no kaon cluster connected to the swath
           4 total failure due to IERR_SW not being zero