***** Read Carefully, Instructions May Change *****
     ***** Updated 02.08.99                        *****
     ***** Updated 05.13.99  SP   
     ***** Updated 05.23.99  SD   

   After you check this package out, do:
    -> cd GltDisplay
    -> source copy_dump  ( this will copy gltXtcDump to your area )

     - Then you can make ntupes from the XTC file (or just dump out the TC information): 

    -> gltXtcDump -n <number-of-events> <input-file-name (.xtc)> <output-file-name (for ntuples)> 

     For making Ntuple output, it is recommended to name it as e.g. /tmp/babar-1234.rz 
     with a run number indication in the file name which will be shown on the event display.
     If <output-file-name> is not given, some TC header information is dumped on the screen.
     If <output-file-name> is not given, and a -p option is added, the GLT TC data 
     will be fulled dumped out on screen.

     - Then 
     run PAW  (pawX11 works fine) and execute macro "gltplot" to get GLT event display: 

     PAW> exe gltplot <input-file-name (where ntuples are)> <first event> <last event> <first tick> <last tick>

     by defaule <input-file-name>=.rz ,  <first event>=1, <last event>=20, <first tick>=<last tick>=8
     the pic/print in the PAW will actually print out all events displayed since the last 
     exec gltplot. To make a print of a particular event, say event N,   exec gltplot <file> N N   
     again to just display that event once then do a pic/print (otherwise the event number, IFR, 
     trigger word displays in the PS print may not come out). 

     Macro "glthist" will produce GLT histograms (options are all the same): 
     PAW> exe glthist <input-file-name (where ntuples are)> <first event> <last event>        (to make histograms) 
     PAW> exe glthist#inputs       (displays phi maps of GLT inputs) 
     PAW> exe glthist#blt          (displays phi maps and time histories of BLT DAQ) 
     PAW> exe glthist#emt          (displays phi maps of EMT inputs to GLT) 
     PAW> exe glthist#emttick      (displays time history of EMT inputs to GLT) 
     PAW> exe glthist#tick         (displays time history of GLT inputs) 
     PAW> exe glthist#counts       (displays GLT object counts) 
     PAW> exe glthist#raw          (displays GLT Raw Lines) 
   
     Macro "gltfmon" will produce GLT Fast Monitoring histograms (options are all the same): 
     PAW> exe gltfmon <input-file-name (where ntuples are)> <first event> <last event>        (to make histograms) 
     PAW> exe gltfmon#phimap       (displays phi maps of GLT inputs) 
     PAW> exe gltfmon#tick         (displays time histories of GLT inputs) 
     PAW> exe gltfmon#idaq         (displays 2D summary of GLT IDAQ)
     PAW> exe gltfmon#counts       (displays GLT object counts and timing)
     PAW> exe gltfmon#rawline      (displays GLT Raw Lines and timing)
   
 *** Note: Currently PTD is shifted by 1 phi bin *and* BLT DAQ and GLT input B, A data is flipped
           (LSB is treated as MSB)   --- obsolete ---
 *** Note: Hardware changed. GLT and DCT follow now same conventions. Software correction
           taken out since Apr/21/99 (Sibylle). 

 *** P.S.  Please do not modify code in the "gltdisplay" area. If you need something different, 
           make your private copy, or ask me change it.

 Have fun! 

 -Victor.