📅 2025-10-26 — Session: Enhanced Data Integrity in Electoral CSV Files
🕒 16:40–17:30
🏷️ Labels: Data Integrity, CSV, Data Processing, Ubuntu, Sampling
📂 Project: Dev
Session Goal: The session aimed to enhance data integrity in electoral CSV files and improve data processing workflows.
Key Activities:
- Verified duplicate CSV files using SHA-256 checksums to ensure byte-for-byte identity.
- Identified data integrity issues in electoral CSV files, including duplicates and a contaminated 2013 file.
- Quarantined the contaminated file and recommended tightening data extraction policies.
- Evaluated data ingestion processes, identifying strengths and weaknesses, and proposed targeted fixes.
- Conducted a data hygiene check, providing recommendations and code fixes for improvement.
- Explored sampling methods for large CSV files in Ubuntu, including random and systematic sampling, to facilitate quick audits.
Achievements:
- Successfully identified and quarantined a contaminated CSV file, preventing potential data integrity issues.
- Improved understanding of data ingestion health and proposed actionable fixes.
- Enhanced data processing workflows with effective sampling techniques.
Pending Tasks:
- Implement the recommended code fixes for data hygiene improvements.
- Review and update data extraction policies to prevent future contamination.