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ms-generation

Convert DSA-110 HDF5 subband visibility data into CASA Measurement Sets.

Updated Aug 27, 2026
Search Tags:#calibration#data conversion#imaging#hdf5#casa#radio astronomy#measurement set
One-click install
npx skills add https://github.com/dsa110/dsa110-contimg --skill ms-generation
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: ms-generation
Source: https://github.com/dsa110/dsa110-contimg/tree/main/backend/.github/skills/ms-generation
Command: npx skills add https://github.com/dsa110/dsa110-contimg --skill ms-generation

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill automates the conversion of raw radio astronomy visibility data from DSA-110's HDF5 format into CASA Measurement Sets, a standard format required for calibration and imaging.

Core Features & Use Cases

  • HDF5 to MS Conversion: Transforms 16 subband HDF5 files into a single, usable Measurement Set.
  • Data Grouping: Intelligently groups subband files by timestamp for accurate reconstruction.
  • Phaseshift Alignment: Prepares data for calibration and imaging by aligning phase centers.
  • Use Case: A radio astronomer needs to calibrate and image data from the DSA-110. This Skill provides the essential first step, ensuring the data is in the correct format and properly aligned for subsequent analysis.

Quick Start

Use the dsa110 convert command to process HDF5 files from /data/incoming to /stage/dsa110-contimg/ms for the date 2025-01-15.

Frequently Asked Questions about ms-generation

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I convert DSA-110 HDF5 visibility data to a CASA Measurement Set?▼

This Skill converts DSA-110 HDF5 subband visibility data into CASA Measurement Sets by grouping 16 subbands by timestamp and applying phaseshifts for imaging. It outputs calibration-ready MS files.

What is the process for grouping HDF5 subbands during Measurement Set conversion?▼

Grouping HDF5 subbands during Measurement Set conversion involves matching 16 subband files by timestamp to accurately reconstruct data before applying phase center alignment for imaging.

Can I orchestrate HDF5 to CASA Measurement Set conversion in a production pipeline?▼

Yes, you can orchestrate HDF5 to CASA Measurement Set conversion in a production pipeline using Dagster, alongside Python API and CLI support for flexible automated radio astronomy workflows.

Does HDF5 to Measurement Set conversion apply phaseshifts for radio astronomy imaging?▼

Yes, HDF5 to Measurement Set conversion applies phaseshifts to align phase centers, ensuring the resulting MS files are properly prepared for subsequent calibration and imaging.

What's the best way to prepare raw DSA-110 telescope data for calibration?▼

The best way to prepare raw DSA-110 telescope data for calibration is converting HDF5 subbands into CASA Measurement Sets, aligning phase centers and standardizing the format for subsequent imaging analysis.

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