Developed a DAQTreeFCAL JEventProcessor plugin for the JeffersonLab/halld_recon repository, enabling structured event-by-event analysis of FCAL detector data. The work focused on processing DFCALDigiHit objects and populating a ROOT TTree named FCALdigi with detailed detector fields such as channel, event, ROC ID, and signal characteristics. Leveraging C++ and ROOT, the implementation modeled detector data for improved integrity and traceability, while integrating seamlessly with existing build systems. This feature enhanced data availability for downstream FCAL analysis modules, accelerated validation of detector performance, and supported smoother integration with analysis pipelines, demonstrating skills in data acquisition, event processing, and plugin development.