[Halld-cal] nan in bcal shower reconstruction

[Beni Zihlmann]

For lack of a better target I send this to the calo group.
Following Matts suggestion to look at the rest file data ruing hddm-xml 
viewer I find reconstructed bcal showers
with "nan" values in them.
see the attached file bcalnan.txt
while they all have a value for the energy they have nan for time and 
x,y,z positions!
also the width parameters are nan and some of the bcalMatchParams are 
nan too!

They all seem to be low energy showers.

cheers,
Beni
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  <reconstructedPhysicsEvent eventNo="936" runNo="30274">
    <bcalShower E="0.0309867" Eerr="0" Eunit="GeV" Ezcorr="0" jtag="" lunit="cm" t="-nan" terr="0" tunit="ns" tzcorr="0" x="-nan" xerr="-nan" xycorr="0" xzcorr="0" y="-nan" yerr="-nan" yzcorr="0" z="-nan" zerr="0">
      <width sigLong="nan" sigTheta="-nan" sigTrans="inf" />
      <bcalMatchParams deltaphi="-0.00208092" deltaz="-nan" dx="0" lunit="cm" pathlength="129.252" shower="1" tflight="4.31139" tflightvar="9.9e+09" track="12" tunit="ns" />
      <bcalMatchParams deltaphi="-0.00245447" deltaz="-nan" dx="0" lunit="cm" pathlength="129.311" shower="1" tflight="4.33181" tflightvar="9.9e+09" track="13" tunit="ns" />
      <bcalMatchParams deltaphi="-0.00247728" deltaz="-nan" dx="0" lunit="cm" pathlength="129.095" shower="1" tflight="4.53135" tflightvar="9.9e+09" track="14" tunit="ns" />
      <bcalMatchParams deltaphi="-0.00250046" deltaz="-nan" dx="0" lunit="cm" pathlength="129.488" shower="1" tflight="5.08904" tflightvar="9.9e+09" track="15" tunit="ns" />
      <bcalDOCAtoTrack deltaphi="-0.00250046" deltaz="-nan" lunit="cm" shower="1" />




  <reconstructedPhysicsEvent eventNo="4376" runNo="30274">
    <bcalShower E="0.14349" Eerr="0" Eunit="GeV" Ezcorr="0" jtag="" lunit="cm" t="-nan" terr="0" tunit="ns" tzcorr="0" x="-nan" xerr="-nan" xycorr="0" xzcorr="0" y="-nan" yerr="-nan" yzcorr="0" z="-nan" zerr="0">
      <width sigLong="nan" sigTheta="-nan" sigTrans="inf" />
      <bcalMatchParams deltaphi="-nan" deltaz="-nan" dx="0" lunit="cm" pathlength="347.869" shower="2" tflight="12.4105" tflightvar="9.9e+09" track="2" tunit="ns" />
      <bcalDOCAtoTrack deltaphi="-1.41486" deltaz="-nan" lunit="cm" shower="2" />




    <bcalShower E="0.10636" Eerr="0" Eunit="GeV" Ezcorr="0" jtag="" lunit="cm" t="-nan" terr="0" tunit="ns" tzcorr="0" x="-nan" xerr="-nan" xycorr="0" xzcorr="0" y="-nan" yerr="-nan" yzcorr="0" z="-nan" zerr="0">
      <width sigLong="nan" sigTheta="-nan" sigTrans="nan" />
      <bcalMatchParams deltaphi="-nan" deltaz="-nan" dx="0" lunit="cm" pathlength="227.437" shower="4" tflight="7.58648" tflightvar="9.9e+09" track="8" tunit="ns" />
      <bcalMatchParams deltaphi="-nan" deltaz="-nan" dx="0" lunit="cm" pathlength="291.056" shower="4" tflight="10.1326" tflightvar="9.9e+09" track="10" tunit="ns" />
      <bcalMatchParams deltaphi="-nan" deltaz="-nan" dx="0" lunit="cm" pathlength="339.4" shower="4" tflight="11.3212" tflightvar="9.9e+09" track="16" tunit="ns" />
      <bcalMatchParams deltaphi="-nan" deltaz="-nan" dx="0" lunit="cm" pathlength="301.866" shower="4" tflight="10.1149" tflightvar="9.9e+09" track="17" tunit="ns" />
      <bcalMatchParams deltaphi="-nan" deltaz="-nan" dx="0" lunit="cm" pathlength="335.534" shower="4" tflight="12.536" tflightvar="9.9e+09" track="18" tunit="ns" />
      <bcalDOCAtoTrack deltaphi="-nan" deltaz="-nan" lunit="cm" shower="4" />