Plots:
1. Spectrum of channels in which pre-shower 1 saw a hit, but pre-shower 2 did not. No channels stand out.
2. Spectrum of the difference (in ADC counts) between preshower 1 for a tower and the average of pre-shower 1 of the neighbors, all towers included
This spectrum looks approximately the same for every single individual channel. Why do (for most channels) the neighboring pre-shower detectors see more than the one with the MIP?
3. Same as 2 vs channel number
4. Same as 3, pre-shower 2
5. Same as 1, preshower 2 without channel 439
6. Same as 5, channel 439, not incorrectly mapped, but with a weird value?
7. Same as 2, post-shower
8. Same as 3, post-shower
9. Similar to 8, but only the average ADC value of the neighbors is plotted. What's with the large values around sector 6?
NEW Plots!
Correlation plots: if there is a MIP in the tower but no MIPs in any adjacent channels, put one point in a 2dhisto for every pre-shower channel that shows a hit, regardless of sector, phi, creed, etc...
The black line in the top of these plots is a box artifact and *not* a set of black points on the histogram.
10. Correlation between preshower 1 and tower
Mapping corrected:
The mapping has now been corrected. These plots contain sector 6, which accounts for the strong correlations in a few channels.
Still, the correlation between the pre/postshower and the towers is very evident.
One more piece of information - for these plots, there was one swap made in each of the pre/postshowers in sector 8 which was not a pre/postshower swap, but rather a tower swap.
13. Correlation between preshower 1 and tower
14. Correlation between preshower 2 and tower
15. Correlation between postshower and tower
On the other hand, I do not see a strong correlation at all between the pre/postshower ADC value and the tower energy (for channels in the same tower). If I make a "no-neighbors" cut but do not make an energy cut on the tower, the following plots result:
16. Correlation between preshower 1 and tower energy - there is a weak correlation present here
17. Correlation between preshower 2 and tower energy - no correlation is evident
18. Correlation between postshower and tower energy - no correlation is evident
19. Correlation between preshowers 1 and 2 and tower energy - the weak correlation in the first plot stands out more in this plot