Bastian focused on improving data quality and maintainability in the owid/owid-content repository by streamlining TSV datasets and cleaning up deprecated explorer configurations. Over two months, he removed obsolete data points and unused configuration files from the democracy explorer dataset, enhancing data reliability for downstream analytics. His work involved careful data cleaning and management, including correcting TSV formatting errors and pruning outdated explorer files to reduce maintenance overhead. By aligning explorer configurations with current usage, Bastian improved repository hygiene and reduced onboarding confusion for other developers. His contributions demonstrated depth in data management and a methodical approach to technical debt reduction.