HILIGT, Upper Limit Servers II — Implementing the data servers

The High-Energy Lightcurve Generator (HILIGT) is a new web-based1 tool which allows the user to generate long-term lightcurves of X-ray sources. It provides historical data and calculates upper limits from image in real-time. HILIGT utilizes twelve satellites, both modern missions such as XMM-Newton Swift, earlier facilities ROSAT, EXOSAT, Einstein or Ariel V. Together, this enables query 50 years and, for instance, study outburst behavior transient In paper we focus on individual back-end servers each satellite, detailing software layout, database design, catalog calls, footprints. We compile all relevant calibration information these provide an in-depth summary details astronomical instrumentation data.