Data Level

Currently, the PMT ``channel'' is used as a fundamental unit in ANXX banks. The structure of the ANXX banks will be represented by three levels of data:

1.

PCA data -- it is required that the trigger word be KTRIG_MB_EXT_ASYNC in order to select good PCA events;

2.

N16 data -- it is required that FEC/D 17/15/4 or 17/15/6 be fired in order to ensure the event is a good N16 event;

3.

raw neutrino data -- To pick up good neutrino events, it is required that

• either NHIT100_HI or NHIT100_MED trigger be on;
• NHIT20 trigger be on;
• 15 $<$ nhits $<$ 60.

Regardless of which data, the pedestal trigger is checked and only those events with pedestal trigger OFF are used in the analysis.