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Table 3
Estimated contributions to the systematic uncertainties in the spectral measurements using H.E.S.S. II mono for the analyses presented in this work.
| Source of uncertainty | Energy scale | Flux | Index | Curvature |
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| MC shower interactions | – | 1% | – | – |
| MC atmosphere simulation | 7% | – | – | |
|
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| Instrument simulation/calibration | 10% | 10% | – | – |
| Broken pixels | – | 5% | – | – |
| Live time | – | <5% | – | – |
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| Reconstruction and selection cuts | 15% | 15% | 0.1/0.46 | 0.01/0.8 |
| Background subtraction | – | 6%/10% | 0.14/0.46 | 0.12/0.6 |
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| Total | 19% | 20%/22% | 0.17/0.65 | 0.12/1.0 |
Notes. Numbers separated by “/” correspond to PKS 2155−304 and PG 1553+113, respectively.
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