Update SusyNtTools to grab the SF from the jet and lepton collections, currently returns 1 by default
Jets stores the "effscalefact" for the whole jet collection (it is the same for all jets in the event) so only grab this value for the btagSF from one of the jets
lepton SF ("effSF") is the SF for each lepton individually at the moment, so will need to multiply them together
Update SusyNtTools to grab the SF from the jet and lepton collections, currently returns 1 by default