ROSAT HRI: X-ray Source Catalog with Reliability Flags

The ROSHRI table contains a list of X-ray sources detected by the ROSAT satellite's High Resolution Imager (HRI). Data centers in the US, Germany, and the UK screened the data and provided source reliability flags. This database table was last updated in August 2001.

Use Cases

• Identify reliable X-ray sources based on the provided source and sequence flags.
• Analyze source parameters like position and count rate for statistical studies.
• Filter out unreliable detections using the documented exclusion criteria (e.g., false_det='T').

Strengths

• Includes reliability flags from three international data centers (US, Germany, UK) to aid source validation.
• Sources have been screened and excluded based on specific parameter criteria to improve catalog quality.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Last updated in August 2001; data may not reflect recent astronomical discoveries.

Provenance

Source

National Aeronautics and Space Administration (NASA HEASARC)

Collection Method

Sources detected by the Standard Analysis Software System (SASS) in reprocessed, public HRI datasets.

Time Range

Observations from the ROSAT mission era; catalog last updated August 2001.

Freshness

Last updated 2026 03 13 17:48:54.136853; freshness should be verified.

Geography

Space-based observations; celestial coverage.