Abhay Raj focused on improving test reliability and code quality for the tardis-sn/tardis repository during March 2026. He standardized tolerance levels in the TestBlackBodySimpleSource tests, addressing test flakiness by refining assertion accuracy and ensuring consistent results across environments. Using Python and leveraging his skills in software development and unit testing, Abhay also resolved an E402 lint error by reorganizing the placement of a tolerance constant, which enhanced code maintainability. His contributions, though limited to bug fixes, laid the groundwork for more robust continuous integration workflows and aligned with GSoC task #3439, demonstrating attention to detail and process improvement.