I was looking at a few events from my LIP analysis which had very low
reconstructed energy but the WFD and ST positions were inconsistent.
I wanted to see what caused them. It turns out there is a another
STOP master error I had never noticed before. I knew about the case
where a STOP master counts for too long. Well it turns out it can
also count for too short a time. Once again this happens on a run by
run basis. This causes the windowing algorithms to fail so you wind
up looking at data which is just random radiocativity.
Here is one of the runs where the SM1 STOP master counted for about
180 us instead of 1000 us.
------------------------------------------------------------------------
Stop Master Node version:2
Trig | Relative Time in 100ns units
| SM1 | SM2 |
TOHM | 209 | 10000 |
ERP | 12 | 10000 |
STM | 1792 | 10000 |
FMT | 1792 | 10000 |
CSPAM | 0 | 0 |
LIP | 66 | 10000 |
ISTOP | 1792 | 1793 |
HIP | 1792 | 10000 |
CENT | 10002 | 0 |
BOT | 10002 | 0 |
WEST | 10002 | 0 |
EAST | 10002 | 0 |
NORTH | 10002 | 0 |
TOP | 0 | 0 |
SM- | 10002 | 0 |
SM+ | 10002 | 0 |
===========================
SM1 Trigger Bits: TOHM ERP CSPAM LIP
SM1 Tohm Bits: TOP JUNK3
SM2 Trigger Bits: CSPAM ISTOP ERPCk STMCk TOHMCk LIPCk
------------------------------------------------------------------------
sigh.... Time to regenerate my NTUPLES.....
-Chris