juliensimon/integral-ibis-hard-xray

---
license: cc-by-4.0
pretty_name: "INTEGRAL IBIS 17-Year Hard X-Ray Survey"
language:
- en
description: "Catalog of 929 hard X-ray sources (17-290 keV) from 17 years of INTEGRAL IBIS observations (Krivonos+ 2022)."
task_categories:
- tabular-classification
- tabular-regression
tags:
- space
- x-ray
- integral
- esa
- hard-x-ray
- astronomy
- physics
- open-data
- tabular-data
size_categories:
- n<1K
configs:
- config_name: default
data_files:
- split: train
path: data/integral_ibis_hard_xray.parquet
default: true
---

# INTEGRAL IBIS 17-Year Hard X-Ray Survey

*Part of the [Astronomy Datasets](https://huggingface.co/collections/juliensimon/astronomy-datasets-69c24caf2f17e36128946743) collection on Hugging Face.*

The INTEGRAL IBIS hard X-ray survey catalog from 17 years of observations with the IBIS coded-mask
telescope aboard ESA's INTEGRAL satellite. Contains **929** hard X-ray sources detected in
the 17--290 keV energy range across **24** source types, with multi-band flux measurements
in 8 energy sub-bands.

## Dataset description

This catalog (Krivonos et al. 2022, MNRAS 510, 4796) presents the deepest all-sky survey in the
hard X-ray band to date. Sources were detected using the IBIS/ISGRI detector over 17 years of
INTEGRAL observations (2003--2020). The catalog provides flux measurements in 8 energy sub-bands
spanning 17--290 keV, plus source classifications, redshifts, and transient/extended flags.

## Schema

| Column | Type | Description |
|--------|------|-------------|
| `source_id` | Int32 | Unique source identifier |
| `source_name` | string | Source name |
| `ra_deg` | float64 | Right ascension J2000 (degrees) |
| `dec_deg` | float64 | Declination J2000 (degrees) |
| `flux_17_60kev` | float64 | Flux in 17--60 keV band (mCrab) |
| `flux_err_17_60kev` | float64 | Flux uncertainty in 17--60 keV band |
| `snr_17_60kev` | float64 | Signal-to-noise ratio in 17--60 keV band |
| `source_type` | string | Source classification |
| `redshift` | float64 | Redshift (when available) |
| `transient_flag` | string | Transient source flag |
| `extended_flag` | string | Extended source flag |
| `confused_flag` | string | Confused source flag |
| `noisy_flag` | string | Noisy region flag |
| `references` | string | Literature references |
| `counterpart` | string | Counterpart identification |
| `notes` | string | Additional notes |
| `flux_17_35kev` | float64 | Flux in 17--35 keV sub-band |
| `flux_35_80kev` | float64 | Flux in 35--80 keV sub-band |
| `flux_80_150kev` | float64 | Flux in 80--150 keV sub-band |
| `flux_150_290kev` | float64 | Flux in 150--290 keV sub-band |
| `flux_17_80kev` | float64 | Flux in 17--80 keV sub-band |
| `flux_35_150kev` | float64 | Flux in 35--150 keV sub-band |
| `flux_80_290kev` | float64 | Flux in 80--290 keV sub-band |
| `flux_17_290kev` | float64 | Flux in 17--290 keV full band |
| `flux_err_*` | float64 | Corresponding flux uncertainties for each sub-band |
| `snr_*` | float64 | Signal-to-noise ratios for each sub-band |
| `plate` | string | Sky plate identifier |
| `simbad_name` | string | SIMBAD cross-matched name |
| `has_redshift` | bool | True if redshift is available |

## Quick stats

- **929** hard X-ray sources
- **401** sources with measured redshift (43.2%)
- Median flux (17--60 keV): 0.00 mCrab
- Peak S/N: 15698.6

## Usage

```python
from datasets import load_dataset

ds = load_dataset("juliensimon/integral-ibis-hard-xray", split="train")
df = ds.to_pandas()

# Flux distribution
import matplotlib.pyplot as plt
df["flux_17_60kev"].clip(upper=100).hist(bins=100, log=True)
plt.xlabel("Flux 17-60 keV (mCrab)")
plt.ylabel("Count")
plt.title("INTEGRAL IBIS Hard X-Ray Flux Distribution")
plt.show()

# Source type breakdown
df["source_type"].value_counts().head(10).plot.barh()
plt.xlabel("Count")
plt.title("Top 10 Source Types")
plt.tight_layout()
plt.show()

# Sky map
plt.scatter(df["ra_deg"], df["dec_deg"], s=2, c=df["snr_17_60kev"].clip(upper=50), cmap="hot")
plt.colorbar(label="S/N")
plt.xlabel("RA (deg)")
plt.ylabel("Dec (deg)")
plt.title("INTEGRAL IBIS All-Sky Hard X-Ray Sources")
plt.show()
```

## Data source

Krivonos, R. et al. (2022), *INTEGRAL/IBIS 17-yr hard X-ray all-sky survey.*
Monthly Notices of the Royal Astronomical Society, 510, 4796--4828.
Via VizieR CDS (J/MNRAS/510/4796/table1).

## Pipeline

Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)

## Citation

```bibtex
@dataset{integral_ibis_hard_xray,
author = {Simon, Julien},
title = {INTEGRAL IBIS 17-Year Hard X-Ray Survey},
year = {2026},
publisher = {Hugging Face},
url = {https://huggingface.co/datasets/juliensimon/integral-ibis-hard-xray},
note = {Based on Krivonos et al. (2022) via VizieR CDS}
}
```

## License

[CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)