The goal is to make sure we are in the correct crossing. 

Analyzing bbc-tof triggered events from 19063026 - 19063058, we saw the following distribution

Figure 1: Sum of all ADC spectra from prepost -1,0,1 from bbc-tof triggered events.  We can clearly see that we are in the wrong prepost (in 1 instead of 0).

In the trigger group discussion, it was determined that the QT32C boards were in the wrong prepost due to earlier pulser tests.  This was corrected, giving us the following distribution (19066001 - 19066012):

Figure 2: Sum of all ADC spectra from prepost -1,0,1 from bbc-tof triggered events. We can see now that we are clearly in the correct prepost.

Oh god, I realized I just switched the color scheme.... SORRY!!!  Will fix in a bit.

Looking at this data a little closer, we can see the individual ADC spectra:
Big Size: drupal.star.bnl.gov/STAR/system/files/Adc_big_19066.pdf
Small Size: drupal.star.bnl.gov/STAR/system/files/Adc_small_19066.pdf

An example of a "normal" channel vs a "problem" channel:

Figure 3: On the left a normal looking channel.  On the right, a not-so-normal looking channel.

In fact, the entire board looks strange.

Figure 4: ADC spectra from the QT32C in EQ1 0x1A.

If we look at it in terms of average ADC or Nhits, we can see the effect.
Average ADC: drupal.star.bnl.gov/STAR/system/files/CrateAdc19066.pdf
Nhits: drupal.star.bnl.gov/STAR/system/files/CrateHit19066.pdf

The average ADC example:

Figure 5: Average ADC Channel by Channel.  We clear see the problem in EQ1 0x1A.

This board was replaced by Steve, it had a stuck bit which was problematic.  Perhaps this is all symptomatic of something.  I will look at the recent data to see if the effect is still there with the new board.