BAT - elliot-hughes/fatjet_analysis GitHub Wiki
I use the Bayesian Analysis Toolkit (BAT) to set limits on signal production, as Theta doesn't easily allow me to morph my templates correctly. I also use BAT to produce Bayesian predictions and perform the Minuit fitting for F-tests. My BAT-specific code is available in the fatjet_bat repository. More documentation is available in its wiki.
History
I starting using BAT to fit analysis regions simultaneously, a task I performed in response to convener questions about signal contamination. In the end, I dropped this procedure, but I kept using BAT for other things.