The first 1,000,000 events from this run are analyzed. Configuration was "production2009_200Gev_Single / Physics"

The clusters are generated from Qtdata. These clusters differ from the "appended/internal" L1 DSM input clusters in two aspects. 1. Qt8 sums are NOT truncated. 2. The perimeter high towers are ignored according to Eleanor's table. 

Total of 40 clusters, one for each Qt32 board, are compared to the threshold.

LED suppression is done by looking at the number of channels with ADC>10, and cutting at 800.

Number of trigger breakdown per module

North Large: Total 11265 triggers, top 5 cells produced 28% of the NL triggers.

South Large: Total 49018 triggers, top 5 cells produced 56% of the SL triggers. There is one cell, ch282, that generated over 17000 triggers. 

North Small: Total 36358 triggers, top 5 cells produced 41% of the NS triggers.

South Small: Total 38787 triggers, top 5 cells produced 16% of the SS triggers.

Overall, 44.5% of the trigger came from large cells.

For the following plots, the origin is South Up.

Cluster sum distribution. (after low 5 bit suppression)

Trigger multiplicity

Mean ADC vs. Number of Triggers

Pseudo Rapidity vs. Number of Triggers 

Attached spreadsheet shows number of triggers, pseudo-rapidity, and phi for each cell.