Innovative Web Tool for Remote Data Acquisition and Analysis: Customized for SKA Low frequency Beamforming Test Bed LPDA Array at Gauribidanur Radio Observatory

TL;DR

This paper presents a web-based tool for remote data acquisition and analysis in radio astronomy, specifically for SKA low frequency beamforming tests at Gauribidanur Observatory, enhancing remote operation and data handling capabilities.

Contribution

Developed a Python-based web interface using Streamlit and PyVISA for remote control, data acquisition, and analysis of the SKA LPDA array, with features like RFI masking and transit plotting.

Findings

Successful solar transit observation demonstrating utility

Remote data download and analysis capabilities validated

Enhanced user experience for radio astronomy data handling

Abstract

With the evolution of radio astronomy, related education and training, the demand for scalable, efficient, and remote systems in data acquisition, storage, and analysis has significantly increased. Addressing this need, we have developed a web interface for a log-periodic dipole antenna (LPDA) array integral to the SKA Test activities at the Gauribidanur Radio Observatory (77.428 E, 13.603 N). This interface, employing Python-based technologies such as Streamlit and PyVISA, along with SCPI commands, offers a seamless and user-friendly experience. Our solution introduces a unique data acquisition approach, employing SCPI through Python to communicate with the setup's Data Acquisition System (DAS). The web interface, accessible remotely via a secure WLAN network or VPN, facilitates user-initiated observations and comprehensive logging and offers advanced features like manual RFI masking, transit plotting, and fringe plot analysis. Additionally, it acts as a data hub, allowing for the remote downloading of observational data. These capabilities significantly enhance the user's ability to conduct detailed post-observation data analysis. The effectiveness of this interface is further demonstrated through a successful solar transit observation, validating its utility and accuracy in real-world astronomical applications. The applications of this web tool are expandable and can be tailored according to the Observatory's Goals and Instrumentation as well as for the growing radio astronomy instrumentation and observing facilities coming up at various educational institutions.