example usage:

1. plot raw waveform events
python scripts/draw_events.py CALORIMETER processed_data/run302.root --plot-dir=plots/run302/samples -n 10

2. plot raw distributions
python scripts/plot_dist.py processed_data/run302.root database/mapmt_raw_dist.json --plot-dir=plots/run302/raw --root-plots

3. timing cuts study for triggers (snapshot to save data)
python scripts/trigger_timing_cuts.py MAPMT database/run302_timing.json --files=processed_data/run302.root --snapshot=processed_data/run302_trg.root --plot-dir=plots/run302/tcuts -b

4. timing cuts study for signals (snapshot to save data)
python scripts/signal_timing_cuts.py MAPMT processed_data/run302_trg.root database/run302_timing.json --snapshot=processed_data/run302_tcuts.root --plot-dir=plots/run302/tcuts/ -b

5. plot distributions after timing cuts
python scripts/plot_dist.py processed_data/run302_tcuts.root database/mapmt_tcuts_dist.json --plot-dir=plots/run302/tcuts --root-plots

6. plot signal sums