Classifier for centrality determination with Zero Degree Calorimeter at the Cooling-Storage-Ring External-target Experiment

The data used in the paper: "Classifier for centrality determination with Zero Degree Calorimeter at the Cooling-Storage-Ring External-target Experiment."The data are related to the variables of the event used for the BDT training, which are simulated via the IQMD simulation modeled to the GEANT4 package. The variables like event impact parameters, deposited energy, and fired channels for different ZDC rings are stored in the CERN Root TTree format.