We describe the offline data analysis module of Electromagnetic Calorimeter (ECL) trigger in the Belle II experiment. The Belle II experiment at SuperKEKB electron-positron collider in Japan aims to produce 50 ab−1of integrated luminosity. The primary physics motivation is to search for the new physics from heavy quark/lepton flavor decays and dark matter search. To check the ECLtrigger performance, we built an offline data monitoring module, Quality Assurance Monitoring(QAM) module. The ECL trigger QAM module is based on the Belle II Aanalysis Framework (basf2). It mainly analyzes the total energy and the cluster energy of Bhabha data skimmed by the Belle II data production group