HILIGT, Upper Limit Servers II -- Implementing the data servers

TL;DR

HILIGT is a web-based tool that aggregates 50 years of X-ray data from multiple satellites, enabling real-time lightcurve generation and upper limit calculations for astronomical sources.

Contribution

This paper details the implementation of individual back-end servers for each satellite in HILIGT, including software architecture, database design, and calibration data integration.

Findings

Integrated data from 12 satellites spanning 50 years.

Detailed software and database architecture for each satellite.

Comprehensive calibration and instrumentation summaries.

Abstract

The High-Energy Lightcurve Generator (HILIGT) is a new web-based tool which allows the user to generate long-term lightcurves of X-ray sources. It provides historical data and calculates upper limits from image data in real-time. HILIGT utilizes data from twelve satellites, both modern missions such as XMM-Newton and Swift, and earlier facilities such as ROSAT, EXOSAT, Einstein or Ariel V. Together, this enables the user to query 50 years of X-ray data and, for instance, study outburst behavior of transient sources. In this paper we focus on the individual back-end servers for each satellite, detailing the software layout, database design, catalog calls, and image footprints. We compile all relevant calibration information of these missions and provide an in-depth summary of the details of X-ray astronomical instrumentation and data.