1. data dample (simulation) 
    AgML geometry version: $STAR/StarVMC/Geometry/IstdGeo/IstdGeo1.xml
    1000 events, 1 muon @ 1 GeV per event.

detp geom y2014

gexec $STAR_LIB/xgeometry.so
make sim/gstar
gclose all
gfile o 1muon_1000evts.fz
user/vxyz 0.001 0.001 0.01
user/vsig 0.01 5
aguser/gkine 1 5 1.0 1.0 -1.0 1.0 1.3 1.6
trig 1000
exit

2. options in BFC chain

root4star -b -q 'bfc.C(1,1000,"tpcRS y2014 AgML MakeEvent ITTF VFMCE -pxlFastSim -pxlDb -PixelIt -StiPxl IstIT istDb istFastSim NoSsdIt StiIst NoSvtIt Idst BAna l0 Tree logger Sti tpcDB TpcHitMover TpxClu bbcSim btofsim tags emcY2 EEfs evout -dstout IdTruth geantout big fzin MiniMcMk clearmem","1muon_1000evts.fz")'

•      1053 IST hits reconstructed (from StIstHitCollection) as shown in below two plots. 

         In the simulation, single muon was generated in range of (74.5 degree, 91.4 degree) of phi (but there are several IST hits out of this range). 

3. check 1:
     (0) checkout the latest version of StiIst from $CVSROOT
     (1) added useVMCGeometry() in the StiIstDetectorBuilder::buildDetectors()
     (2) This version has been updated by Dmitri for the IST inactive volume building in Sti geometry. It's simplified with a tube volume for IBMO.
     (3) Results:

•       962 TPC tracks reconstructed as shown in below plot:

        32 tracks do not have IST hit, 907 tracks have 1 hit each, 23 tracks have 2 ist hits each.

4. check 2:
     (0) Run the tracking with previous StiIstDetectorBuilder (loop all inactive volumes, but have overlaps)
     (1) Results:

•      962 TPC tracks reconstucted as shown in below plot

      32 tracks do not have IST hit, 909 tracks have one IST hit each, 21 tracks have 2 IST hits each.