The first look of the 22 strings data


I give you results from my first look of the 22 strings data.

I used data of run #10894 which is taken 1st, August, 2007 (PFFilt_PhysicsTrig_PhysicsFiltering_Run00108984_Level0_Part00000000.i3).

I used a script that was used for the 9 strings analysis. (Thanks to Aya, providing me the script.)


Summary

Let me summarize at first.

Data seems to be mostly fine as far as I checked;) I will investigate the data in more detail.


1. Fundamental plots

start time. In total, 3000 s = 50 min.

PMT gain distribution. Looks nice.

2. First guess

cos(Zenith). There is a peak around 0.3.

Azimuthal angle. Threre is two peaks.

cos(Zenith) with #DOM>80 cut. The peak disappeared.

Azimuthal angle with #DOM>80 cut. The peak disappeared, though we need more statistics.

X position of the brightest cascades. There is a peak at 0, but this is un-physical. This is same for position Y and Z.

Y position of the brightest cascades

Z position of the brightest cascades. The distribution is reflecting the dust layer.

velocity of tracks

3. Event base

hit DOM distribution. There is a gap at 80 DOMs. I think this is due to different trigger condition.

LC triggered DOM distribution

ATWD hit DOM distribution

FADC hit DOM distribution

total estimated Npe

total estimated ATWD Npe

total estimated FADC Npe

total integrated ATWD charge

total integrated FADC charge

total (based) integrated charge

4. ATWD channel base

ATWD amplitude distribution

ATWD baseline. looks nice.

ATWD integrated charge distribution

ATWD estimated Npe

ATWD occupancy vs OM ID

hit position on X axis. uniformly distributed.

hit position on Y axis. uniformly distributed. The peak is due to just overlap of strings.

hit position on Z axis. We see again the dust layer effect.

5. FADC channel base

Well, these results are more or less same as ATWD ones.

FADC amplitude distribution

FADC baseline. looks nice.

FADC integrated charge distribution

FADC estimated Npe

FADC occupancy vs OM ID

hit position on X axis. uniformly distributed.

hit position on Y axis. uniformly distributed. The peak is due to just overlap of strings.

hit position on Z axis. We see again the dust layer effect.


Keiichi Mase
Last modified: Mon Aug 20 17:45:19 JST 2007