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This tutorial is based on the SKA Data Challenge 1. The aim of the tutorial is to learn to identify and classify sources is radio images. The data provided is simulated, to represent what the SKA data will look like once the telescope is in operation.

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DOI

SKA Science Data Challenge-1, tutorial/hack format

Description

Welcome to the SKA Science Data Challenge-1! The SKA planned for 4 data challenges to prepare the scientific community for the challenges that the SKA will present. We took the 1st data challenge and turned it into a tutorial format suitable for early carer researchers. From the tutorials, you will learn the following:

  • Tutorial 1 : Data preprocessing
  • Tutorial 2 : Source classification

The aim of the tutorials is as follows:

  • Source finding (RA, Dec) to locate the centroids and/or core positions,
  • Source property characterization (integrated flux density, possible core fraction, major and minor axis size, major axis position angle)
  • Source classification (one of SFG, AGN-steep, AGN-flat)

Data

3 different simulated data are used in this workflow, where the simulation represents the following frequencies:

  • 560 MHz
  • 1400 MHz
  • 9200 MHz

A sample of each image can be downloaded using the script binder/download_sample_data.sh, to excute the script run the following:

>  bash binder/download_sample_data.sh

Hackathon Task

From the proposed pipeline, investigate new ways to find/classify sources.

Prerequisites

All the libraries/dependencies necessary to run the tutorials are listed in the requirements.txt file.

Installation

All the required libraries can be installed using pip and the requirements.txt file in the repo:

> pip install -r requirements.txt

Would you like to clone this repository? Feel free!

> git clone https://github.com/Hack4Dev/dataChallenge_hack.git

Then make sure you have the right Python libraries for the tutorials.

New to Github?

The easiest way to get all of the lecture and tutorial material is to clone this repository. To do this you need git installed on your laptop. If you're working on Linux you can install git using apt-get (you might need to use sudo):

apt install git

You can then clone the repository by typing:

git clone https://github.com/Hack4Dev/dataChallenge_hack.git

To update your clone if changes are made, use:

cd dataChallenge_hack/
git pull

About

This tutorial is based on the SKA Data Challenge 1. The aim of the tutorial is to learn to identify and classify sources is radio images. The data provided is simulated, to represent what the SKA data will look like once the telescope is in operation.

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  • Jupyter Notebook 49.6%
  • Python 48.7%
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