L2-pedestal monitor-Algo ( 100% accept)

1. Goal: accumulate pedestals for all towers of ETOW & BTOW.
2. RTS params:

    
     par_pedSubtr  =rc_ints[0]!=0;
     par_speedFact =rc_ints[1];
     par_saveBinary=rc_ints[2]!=0;
     par_dbg       =rc_ints[3];
     par_prescAccept=rc_ints[4];
   

3. Meaning of speed 

   time spent in L2-ped is proportional to # of towers processed per event.
   
   speed=1 means for every event process all 4800+720 towers, takes 1mSec
   
   speed=2 means 
     for the first event process tower 1,2, 5,6, 9,10,...., takes 500 uSec
     for the second event process tower 3,4, 7,8, 11,12,...., takes 500 uSec 
     repeat
     So L2ped runs 2x faster but effectively you get 1/2 of stats for all towers.
   
   speed=4 means : 
       1st eve works with towers: 1,2,3,4, 17,18,19,20,... takes 250 uSec
       2nd eve works with towers: 5,6,7,8, 21,22,23,24,... 
       3rd  ...
       4th eve ...
       repeat
   
   You got the pattern. Allowed 'speeds' are common divider of 4800 & 768.  
   Allowed speed values: 1,2,4,8,16,32,64,192
   
   But even if you type sth absurd L2ped will correct it to the closest correct value.