Problem: when I tried to compare data and bkg model, I realized that jet pt of data doesn't make sense, for example, I applied jet pT > 15 GeV (non-1st and non-2nd leading jets), why are there some jets with pT < 15 GeV (see the figure attached).

So what I checked:

• Use the simplest method to plot jet PT by Hist1D in cafe, jet pt looks making sense.
• Write a very simple cafe processor to check this, all jet pT make sense
• Add cafe.ReadPartail: false to my configure file, no effect
• At last, looked input SingleTopTopovars.cpp, and commented out a line about _JetCollection.push_back(RejectedGoodJets[i]); which may cause the problem. Yes, this is the reason. Because I specify a rejected good jet branch without any pt and eta cut, so no wonder lower jets come in. Fixed: 1. Add a printing note if the branch is speficied. 2. Remove the branch spefication in my base configure files.
  

I don't expect this configure bug will affect our TRF measurements and QCD samples. Just do btagging again now....