Worked on backend development within the gammasim/simtools repository, focusing on enhancing reliability and data integrity in NSB level handling. Addressed a mapping inconsistency by de-duplicating NSB level values, specifically aligning the 'moon' level with 'half' to eliminate redundant entries in the levels dictionary. Applied explicit dictionary assignment in Python to ensure related NSB level values remain synchronized, which reduces the risk of drift and simplifies future maintenance. This targeted bug fix improved the accuracy of NSB-level computations and analytics, strengthening confidence in reporting based on these values. The work demonstrated careful attention to maintainability and backend data quality.