root files
----------
https://www.hep.lu.se/eudet/pictures/mcmtests/smalltpc/root/20240311/
10 events per file.
20 MHz clock
1008 samples per channel.
Normal gas flow

https://www.hep.lu.se/eudet/pictures/mcmtests/smalltpc/root/20240312/
ca 15 events per file.
20 MHz clock
1000 samples per channel
Reduced gas flow, for long drifts lower pulses seen.

Sampling clocks are shifted between chips
(in order to avoid all chips writing in memory at the same time,
since this creates visible clock noise in data):

chip  clock cycles shifted (20 MHz clock)
0     0
1     1
2     2
3     3
4     0
5     1
6     2
7     3

Software
--------
Simple event display (as an example):
plotevent.cpp
Mapfile (pad to channel):
mapping-2.csv
Script to display event:
plotevents.sh