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 based on software-appended L1 input.

North Large: Total 54744 triggers, top 5 cells produced 19% of the NL triggers.

South Large: Total 170746 triggers, top 5 cells produced 59% of the SL triggers. Ch454 is still very hot, and it generated over 87000 triggers.

North Small: Total 66705 triggers, top 5 cells produced 30% of the NS triggers.

South Small: Total 44343 triggers, top 5 cells produced 27% of the SS triggers.

Overall, 67.0% of the trigger came from large cells. Channel 454 on South Large continues to be a problem. Small cells are now about as good as they were before the magnet polarity flip on ~day 147, but triggger rates in simliar eta range still varies more than an order of magnitude depnding on the azimuthal angle. 

For the following plots, the origin is South Up.

Cluster sum distribution. (after low 5 bit suppression)

Trigger multiplicity

Pseudo Rapidity vs. Number of Triggers 

Attached spreadsheets show number of triggers, pseudo-rapidity, and phi for each cell. There is one for Qtdata based triggers, and another for L1 based triggers.