CMS specializations

Tasks

CreatePileUpWeights

CreatePileUpWeights: This task is called because of the pu_weights_from_columnflow Producer, more specifically due to its requirements, in the pu_weights_from_columnflow_requires() method, which contains the following lines:

from columnflow.tasks.cms.external import CreatePileupWeights
reqs["pu_weights"] = CreatePileupWeights.req(self.task)

This task creates the columns necessary for the pileup weights, which are used to reweight the simulated events to match the pileup distribution of the data, using different files provided by CMS and to be declared in the config.

With the advent of the correctionlib and its entries for pileup, this task is now outdated.