April 2026 (2026-04) focused on improving data integrity and visualization reliability for the lsst-ts/donut_viz repository. Key changes ensured consistent donut_id handling across aggregate tables, plots, and science sensor data, and added backward compatibility for column name validation to support legacy data formats. These updates reduce dashboard discrepancies and processing failures when legacy datasets are involved, enabling more trustworthy analytics for business stakeholders.

March 2026 monthly summary focusing on key features delivered, major bugs fixed, impact, and skills demonstrated across ts_wep and donut_viz. Delivered data integrity improvements, enhanced WCS/catalog pipelines, Zernike-based processing, and parallel RA AOS to boost throughput. Business value includes more reliable data processing, improved downstream analytics, and faster results for cataloging and image analysis.

February 2026 performance summary focusing on delivering robust Zernike computations, resilient WCS fitting, and enhanced donut visualization. The team completed key feature work in ts_wep and donut_viz, improved test robustness, and introduced configurations to accelerate analysis pipelines. Business value centers on higher data quality, more reliable calibrations, and faster turnaround for donut analyses.

January 2026 monthly summary for performance review: Highlighting delivered features, major fixes, business impact, and technical capabilities across lsst-ts/donut_viz, lsst-ts/ts_wep, and lsst-sitcom/summit_utils. Emphasizes concrete deliverables, code quality improvements, and measurable improvements to performance, reliability, and developer productivity.

December 2025 focused on delivering core features, improving release management, and hardening code quality across three repos: lsst-ts/donut_viz, lsst-ts/ts_wep, and lsst-sitcom/summit_extras. The work emphasized robust release documentation, maintainable code, and reliable data processing pipelines, with visibility into changes via version history updates and Towncrier integration.

November 2025: Delivered targeted enhancements across donut_viz and ts_wep that improve release reliability, data product quality, and automation. Key outcomes include a Towncrier-based release notes workflow and CI/pre-commit improvements, substantial Zernike estimation and WEP enhancements in ts_wep, the introduction of an unpaired LSSTCam rapid analysis pipeline, improved robustness and metadata handling in PlotDonutFitsTask, and tuned donut selection to boost catalog accuracy. Also expanded test coverage with intrinsic LSSTCam data and added strict metadata validation for getModel, all contributing to faster, more reliable releases and higher-confidence science products.

2025-10 monthly summary for lsst-ts/ts_wep: Strengthened plotting robustness, hardened Zernike computations, and performed comprehensive codebase cleanup to reduce maintenance overhead and regression risks. These changes improve reliability for end-users and enable faster, safer feature delivery.

Concise monthly summary for 2025-09 focusing on key features delivered, major bugs fixed, overall impact, and technologies demonstrated across lsst-ts/ts_wep and lsst-ts/donut_viz. Highlights include parallelized donut processing, robust WCS fitting with rollback semantics, YAML-driven RefitWCS pipeline, updated tests, and improvements in data provenance and performance.

July 2025 monthly summary for lsst-ts development across ts_wep, donut_viz, and sdm_schemas. Key outcomes include integration of background subtraction into donut workflows, robustness improvements for the Danish processing pipeline, metadata and schema quality enhancements, and fixes to ensure clean cross-repo integration. The work emphasizes business value through improved detection accuracy, data quality, and release-readiness across multiple repositories.

June 2025 monthly work summary focusing on delivering cross-repo business value, improving data reliability, and strengthening analytics capabilities. The team completed targeted features across three repositories, fixed pipeline configuration issues affecting test reliability, and added robustness guards to data processing workflows.

May 2025 performance summary for lsst-ts development across ts_wep, ts_config_ocs, and donut_viz. Delivered end-to-end enhancements to metadata handling, modernized science sensor tests, and strengthened test infrastructure, while improving configuration management and code quality. The month focused on concrete feature delivery, robust metadata pipelines, test reliability, and maintainable configuration to enable scalable data products and faster deployment readiness.

April 2025 monthly summary: Strengthened test-data quality and test infrastructure across two repos (lsst-ts/ts_wep and lsst-ts/donut_viz) to improve reliability, faster feedback, and data fidelity. For ts_wep, fixed ROTPA test data in line with DM-49838 alignment, and implemented test-data packaging and integrity enhancements (gzipped data, Git LFS pointers, updated test infra docs), plus test-infrastructure/runtime improvements (thread limiting across numerical libraries, restricted CWFS pipelines to tested sensors, and updated pre-commit/lint for Python 3.12). For donut_viz, improved pipeline robustness for donut data (aggregation fixes for missing CWFS tables and edge-case metadata handling) and introduced a direct donut detection workflow with tuned configurations and thresholds, complemented by Zernike calculation pipeline improvements for better data selection. These efforts increased test reliability, reduced flakiness, and improved data processing fidelity, enabling faster, more trustworthy releases. Skills demonstrated include Python tooling, CI/CD practices, Git LFS and gzipped assets, and orchestration of testing and data pipelines.”,

March 2025 performance highlights: Delivered major pipeline enhancements in lsst-ts/donut_viz, integrated CWFS compatibility and LSSTCam pipelines, and reorganized imports to prevent conflicts. Strengthened lsst-ts/ts_wep with optimization controls to prevent hangs in CI, along with substantial test infrastructure enhancements and packaging readiness. These efforts reduced CI flakiness, improved data-processing reliability, and improved deployability across environments.

February 2025 (lsst-ts/ts_wep): Delivered core donut-related improvements with a focus on explicit filter selection, robustness, and pipeline reliability. Highlights include: 1) Configurable Donut Catalog Filter List: added explicit filter control and improved error handling for missing filters, plus stable behavior for single-filter configurations (commit 446bf9ea82062d7fbffe514a8ff2bff8058b0f3a). 2) Donut Cutouts Processing Pipeline Enhancements: refactored to process one sensor at a time, introduced ReassignCwfsCutoutsTask to map intra-focal cutouts to extra-focal detector IDs, and standardized output naming/return logic (commits 6892a4f4f0d0d8137384e1372a0afcc184a293c0, 6ea6f3ba875094a38acb7e65d97cab91271b43ba, b99769398e9a8e26915f3087bd5b5aa48a1e33d4). 3) Pipeline Configuration Reorganization (donut_viz): moved pipeline configurations into the donut_viz directory to resolve circular import issues and enable more robust testing (commit 9370fd05ea96ca1f5ab8b136b87a6fafda9c7151). These changes enhance reliability, testability, and maintainability, driving more accurate and reproducible donut-related science products.

January 2025 monthly performance summary focusing on delivering robust ComCam data processing improvements, stabilizing default configurations, addressing data integrity, and overall code quality enhancements. The work emphasizes business value by improving data reliability, reducing manual intervention, and accelerating pipeline throughput for the ComCam/AOS workflow.

December 2024 monthly summary focusing on feature delivery, bug fixes, and pipeline improvements across two repos: lsst-ts/donut_viz and lsst-ts/ts_wep. Emphasis on business value, data integrity, reliability, and testing coverage.

November 2024 monthly summary: Delivered targeted feature improvements, reliability fixes, and process improvements across the donut_viz, ts_wep, and ts_config_ocs repositories, with measurable gains in performance, accuracy, and testability. The work focused on pipeline optimization, correctness hardening, and better instrumentation/documentation, aligning technical delivery with business value such as faster visualizations, more reliable donut processing, and configurable test pipelines.

October 2024 monthly summary for lsst-ts/donut_viz focusing on the WEP science pipeline, donut data aggregation, and CI/test infrastructure improvements. Key features delivered: - WeP science pipeline development and testing: implemented run pipeline for tests, completed science sensors tests, updated ISR/config for test pipeline including donut detection and Zernike computations. (Commits: 76b7e1767d7bf450cf8f194c7ee598e686c204a7, 1367d16d91629d12469454cda58f5d9087e98789, 77fc28139df04969c09beade503dd33b8a6caf0a) - Donut data aggregation and testing improvements: expanded test coverage for aggregate Zernikes, donut tables, donut stamps, AOSVisitTables, and ensured aggregateDonutTables picks up intra- and extrafocal doughnut tables. (Commits: 3d68495986f03c8c7851c59c6ea4cafc754ae21b, c80d08e2c3c3ecd9a6b30f09ccce6d54040473bb, bd77c3e6bc81c396be0c98c48e1ce33627019970, 0d11458ea6f28fa5d7b6bef37fb748948a7ee41d, 04a95ccf1b4350a29dc9793eef8e206c8d845d7c) - WEP testing infrastructure and CI updates: updated dependencies and CI to support ts_wep, adjusted Jenkinsfile paths, and added Git LFS requirements for Jenkins builds. (Commits: d12766c2eb76dcdd02ca03255e00f1b033e151b8, f3ef672a004932dba886d27831eb4535535236de, cbe08e2c67575e80e8fd371fb66d1cc4d7c07ec6, 1521f639006b42dfba8fbe1d41289ab477e064c3) - Changelog automation workflows: introduced and updated GitHub Actions to automate changelog checks and generation on PRs and main branch. (Commits: fd846e9e48826a4718964df3345b74581e7b50ef, c2fcf56eb1690f835e0e9f292cf028b5462f4901) Major bugs fixed: - CI/test infra: corrected Jenkinsfile paths and added git LFS support to Jenkins builds to stabilize pipelines (commits listed above). - Test data handling: fixed test data naming and package installation to ensure ts_wep tests run reliably (commits: f3ef672a004932dba886d27831eb4535535236de, cbe08e2c67575e80e8fd371fb66d1cc4d7c07ec6, 1521f639006b42dfba8fbe1d41289ab477e064c3). Overall impact and accomplishments: - Delivered end-to-end enhancements to the WEP science pipeline and donut data ingestion/testing, boosting test coverage, reproducibility, and reliability for science workflows. - Introduced automated changelog and CI workflows reducing manual effort and improving release traceability. - Strengthened data quality controls through comprehensive aggregation tests and new AOS table checks. Technologies/skills demonstrated: - Python-based data pipelines and test suites, Zernike computation validation, donut data workflows, and AOSVisitTable handling. - CI/CD: GitHub Actions workflows, Jenkinsfile corrections, Git LFS integration, ups packaging, and test dependency management (ts_wep). - Collaboration and code hygiene: test-driven enhancements, refactoring of aggregateDonutTables, and clear commit history with descriptive messages.