AliceO2Group/O2Physics
Jan 2025 – Jul 2026
8 Months active
Languages Used
C++CMake
Technical Skills
C++CMakeData AnalysisHigh Energy PhysicsAlgorithm DevelopmentData Structures
Nida Malik
PROFILE
Nida Malik
Developed and enhanced net charge fluctuation analysis features within the AliceO2Group/O2Physics repository, focusing on robust, physics-driven data workflows. Over eight months, delivered new C++ modules and refactored existing tasks to support Run-2 and Run-3 data, integrating Monte Carlo simulation, ROOT-based histogramming, and CCDB-driven efficiency corrections. Implemented eta- and centrality-dependent efficiency maps, advanced event and track selection logic, and expanded QA coverage for improved reliability. Upgraded configuration management and ensured reproducibility through disciplined version control. The work enabled more precise particle fluctuation studies, streamlined analysis pipelines, and provided maintainable, extensible infrastructure for high energy physics data analysis.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
13Total
Bugs
0
Commits
13
Features
8
Lines of code
3,781
Activity Months8
Your Network
493 peopleSame Organization
@cern.ch348
Work History
July 2026
2 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary for AliceO2Group/O2Physics. Delivered key enhancements to net charge fluctuation analysis: centrality-based efficiency histograms added; efficiency maps updated and aligned with CCDB config; refactored configuration for safety and maintainability; Run3 default process switches updated to reflect the latest workflow; expanded histogram coverage to include efficiency as a function of eta, pt, and centrality. Implemented via commits b9d05e0a54dc77df331b999c6b9cf4e4a52db4bf and 52a6fba2693bebf09b0767ed9d04b6addaded0a6. Impact: improved physics precision in net charge fluctuation studies, more robust analysis pipeline for Run3, reduced risk due to configuration changes, and smoother future maintenance. Skills demonstrated: histogram engineering, centrality-dependent analysis, configuration management, CCDB integration, Run3 workflow governance, and strong version control.
2 Commits • 1 Features
Jul 1, 2026July 2026 monthly summary for AliceO2Group/O2Physics. Delivered key enhancements to net charge fluctuation analysis: centrality-based efficiency histograms added; efficiency maps updated and aligned with CCDB config; refactored configuration for safety and maintainability; Run3 default process switches updated to reflect the latest workflow; expanded histogram coverage to include efficiency as a function of eta, pt, and centrality. Implemented via commits b9d05e0a54dc77df331b999c6b9cf4e4a52db4bf and 52a6fba2693bebf09b0767ed9d04b6addaded0a6. Impact: improved physics precision in net charge fluctuation studies, more robust analysis pipeline for Run3, reduced risk due to configuration changes, and smoother future maintenance. Skills demonstrated: histogram engineering, centrality-dependent analysis, configuration management, CCDB integration, Run3 workflow governance, and strong version control.
July 2026
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 – AliceO2Group/O2Physics: Delivered a major feature upgrade to efficiency corrections and centrality estimation, boosting analysis accuracy and MC reliability. Upgraded efficiency corrections from 1D to 2D by incorporating eta-dependent histograms and added FT0-based centrality estimation for MC predictions. These changes enhance particle fluctuation analyses and the overall physics output.
June 2026
1 Commits • 1 Features
Jun 1, 2026June 2026 – AliceO2Group/O2Physics: Delivered a major feature upgrade to efficiency corrections and centrality estimation, boosting analysis accuracy and MC reliability. Upgraded efficiency corrections from 1D to 2D by incorporating eta-dependent histograms and added FT0-based centrality estimation for MC predictions. These changes enhance particle fluctuation analyses and the overall physics output.
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for developer work in AliceO2Group/O2Physics. Focused on delivering a feature to improve net charge fluctuations analysis by applying separate efficiency corrections for positive and negative charge particles. This change enhances accuracy of physics results and aligns with PWGCF standards. No major bugs fixed this month. Impact includes more reliable charge-fluctuation measurements and smoother integration into the analysis pipeline. Technologies demonstrated include C++ data-analysis pipelines, efficiency correction schemes, and version-control discipline.
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for developer work in AliceO2Group/O2Physics. Focused on delivering a feature to improve net charge fluctuations analysis by applying separate efficiency corrections for positive and negative charge particles. This change enhances accuracy of physics results and aligns with PWGCF standards. No major bugs fixed this month. Impact includes more reliable charge-fluctuation measurements and smoother integration into the analysis pipeline. Technologies demonstrated include C++ data-analysis pipelines, efficiency correction schemes, and version-control discipline.
February 2026
October 2025
2 Commits • 1 Features
Oct 1, 2025Monthly summary for Oct 2025 (AliceO2Group/O2Physics): Delivered enhancements to multiplicity analysis and event selection controls to improve robustness and reliability of physics results. Implemented updated polynomial fitting for multiplicity correlation plots (cfgMultGlobalPVCutPars) and new TF1 controls (fMultGlobalPVCutLow/high), along with refined configuration options for pileup rejection and vertex/multiplicity cuts to enable more robust outlier handling. These changes reduce analysis systematics from outliers and provide analysts with more configurable, production-grade controls for multiplicity analyses.
October 2025
2 Commits • 1 Features
Oct 1, 2025Monthly summary for Oct 2025 (AliceO2Group/O2Physics): Delivered enhancements to multiplicity analysis and event selection controls to improve robustness and reliability of physics results. Implemented updated polynomial fitting for multiplicity correlation plots (cfgMultGlobalPVCutPars) and new TF1 controls (fMultGlobalPVCutLow/high), along with refined configuration options for pileup rejection and vertex/multiplicity cuts to enable more robust outlier handling. These changes reduce analysis systematics from outliers and provide analysts with more configurable, production-grade controls for multiplicity analyses.
September 2025
2 Commits • 1 Features
Sep 1, 2025Month 2025-09: Delivered histogram-driven analytics enhancements across NetchargeFluctuations and PWGCF in AliceO2Group/O2Physics. Implemented new histograms for error estimation via subsampling, 1D efficiency histograms, and updated centrality selection for FT0M/FT0C, together with distributions across delta eta and centrality, as well as multiplicity correlation histograms and QA plots. These changes consolidate analytics, improve QA coverage, and enable more precise performance checks and physics interpretations.
2 Commits • 1 Features
Sep 1, 2025Month 2025-09: Delivered histogram-driven analytics enhancements across NetchargeFluctuations and PWGCF in AliceO2Group/O2Physics. Implemented new histograms for error estimation via subsampling, 1D efficiency histograms, and updated centrality selection for FT0M/FT0C, together with distributions across delta eta and centrality, as well as multiplicity correlation histograms and QA plots. These changes consolidate analytics, improve QA coverage, and enable more precise performance checks and physics interpretations.
September 2025
August 2025
2 Commits • 1 Features
Aug 1, 2025Month: 2025-08 – Focused on delivering enhanced Netcharge Fluctuations analysis within the PWGCF module in O2Physics, including efficiency corrections and delta eta–centrality histograms. Implemented CCDB-driven efficiency integration, expanded QA coverage, and introduced Nudyn computations across delta eta. This work improves accuracy of particle production correlation studies and provides richer, delta eta-dependent insights for PWGCF analyses, contributing to more robust physics validation and reproducibility.
August 2025
2 Commits • 1 Features
Aug 1, 2025Month: 2025-08 – Focused on delivering enhanced Netcharge Fluctuations analysis within the PWGCF module in O2Physics, including efficiency corrections and delta eta–centrality histograms. Implemented CCDB-driven efficiency integration, expanded QA coverage, and introduced Nudyn computations across delta eta. This work improves accuracy of particle production correlation studies and provides richer, delta eta-dependent insights for PWGCF analyses, contributing to more robust physics validation and reproducibility.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 (2025-06) – O2Physics NetchargeFluctuations enhancements and Run-2/Run-3 readiness Key feature delivery: Implemented Monte Carlo histograms for net charge fluctuations and extended PWGCF NetchargeFluctuations to be compatible with Run-2 and Run-3 data. Refactored data processing to support both reconstructed and generated data, introduced new data structures, and refined track selection and event selection criteria to improve analysis accuracy. Added new histograms in PWGCF NetchargeFluctuations to enhance charged particle distributions and their correlations with centrality, including multiplicity-related distributions. Commits of record: 6c5645e90bb0a2fbeedd9311cf60dc313512adba (PWGCF) - Added histograms for Monte Carlo (#11486); 95b5927c53293c9248b0c0b8f690bd8605812222 (PWGCF) - Added Histograms for Monte Carlo (#11698). Overall impact: Enables robust cross-run physics validation and more precise centrality-multiplicity studies, strengthening the reliability of Monte Carlo-based corrections and data-model comparisons for O2Physics analyses. Technologies/skills demonstrated: Monte Carlo histogram design, Run-2/Run-3 data compatibility, data structure refactor, enhanced event/track selection, PWGCF task integration, C++/Python data processing, and reproducible commit-based development.
2 Commits • 1 Features
Jun 1, 2025June 2025 (2025-06) – O2Physics NetchargeFluctuations enhancements and Run-2/Run-3 readiness Key feature delivery: Implemented Monte Carlo histograms for net charge fluctuations and extended PWGCF NetchargeFluctuations to be compatible with Run-2 and Run-3 data. Refactored data processing to support both reconstructed and generated data, introduced new data structures, and refined track selection and event selection criteria to improve analysis accuracy. Added new histograms in PWGCF NetchargeFluctuations to enhance charged particle distributions and their correlations with centrality, including multiplicity-related distributions. Commits of record: 6c5645e90bb0a2fbeedd9311cf60dc313512adba (PWGCF) - Added histograms for Monte Carlo (#11486); 95b5927c53293c9248b0c0b8f690bd8605812222 (PWGCF) - Added Histograms for Monte Carlo (#11698). Overall impact: Enables robust cross-run physics validation and more precise centrality-multiplicity studies, strengthening the reliability of Monte Carlo-based corrections and data-model comparisons for O2Physics analyses. Technologies/skills demonstrated: Monte Carlo histogram design, Run-2/Run-3 data compatibility, data structure refactor, enhanced event/track selection, PWGCF task integration, C++/Python data processing, and reproducible commit-based development.
June 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly performance summary for AliceO2Group/O2Physics focused on delivering a new Net Charge Fluctuations Analysis Task. The feature replaces the existing netproton-cumulants-mc task with a new C++ implementation and comprehensive histogram instrumentation to capture vertex position, centrality, multiplicity, eta, transverse momentum (pT), and DCA measurements before and after track selection. The work is documented in commit e5084c745d1f5e9dc3be7d9f0e46a8a1f5562ec5 ([PWGCF] Net charge (#9525)). No explicit major bug fixes were recorded for this repository this month. Overall impact includes enhanced physics analysis capabilities, standardized workflows, and improved reliability and comparability for net charge studies. Technologies/skills demonstrated include C++ development, histogram initialization/filling, integration of analysis tasks within the O2Physics framework, and version-control discipline.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly performance summary for AliceO2Group/O2Physics focused on delivering a new Net Charge Fluctuations Analysis Task. The feature replaces the existing netproton-cumulants-mc task with a new C++ implementation and comprehensive histogram instrumentation to capture vertex position, centrality, multiplicity, eta, transverse momentum (pT), and DCA measurements before and after track selection. The work is documented in commit e5084c745d1f5e9dc3be7d9f0e46a8a1f5562ec5 ([PWGCF] Net charge (#9525)). No explicit major bug fixes were recorded for this repository this month. Overall impact includes enhanced physics analysis capabilities, standardized workflows, and improved reliability and comparability for net charge studies. Technologies/skills demonstrated include C++ development, histogram initialization/filling, integration of analysis tasks within the O2Physics framework, and version-control discipline.
Activity
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Quality Metrics
Correctness81.6%
Maintainability81.6%
Architecture80.8%
Performance70.8%
AI Usage29.2%
Skills & Technologies
Programming Languages
C++CMake
Technical Skills
Algorithm DevelopmentC++C++ DevelopmentCCDBCMakeConfiguration ManagementData AnalysisData StructuresData VisualizationEvent SelectionHigh Energy PhysicsHigh Energy Physics AnalysisMonte Carlo SimulationPhysics SimulationROOT
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