CTAO Instrument Response Functions: Prod5 v0.1 for Gamma-Ray Astronomy

CTAO Instrument Response Functions - prod5 version v0.1 provides performance evaluation data and instrument response functions (IRFs) for the Cherenkov Telescope Array Observatory. The data is derived from detailed Monte Carlo simulations using the CORSIKA air shower code and sim_telarray tool, published in September 2021. It is licensed under a Creative Commons Attribution 4.0 International License.

Use Cases

• Calibrating gamma-ray flux sensitivity models based on provided IRFs.
• Simulating telescope performance for different observational conditions based on zenith and azimuth angles.
• Comparing CTAO's angular resolution and sensitivity against other gamma-ray detectors.
• Studying the impact of the geomagnetic field on air shower development for the Northern and Southern sites.

Strengths

• Data is derived from detailed Monte Carlo simulations using CORSIKA v7.71 and sim_telarray.
• Performance estimations are provided for three zenith angles (20, 40, 60 deg) and two azimuth angles.
• Covers a very wide energy range from 20 GeV to 300 TeV.
• Includes archived performance figures and has a specific citation request for academic use.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• Performance is estimated for nominal telescope pointing; other modes are noted for future provision.

Provenance

Source

Cherenkov Telescope Array Observatory (CTAO)

Collection Method

Derived from Monte Carlo simulations of the CTA instrument.

Freshness

Published September 2021; last update date is unknown.