Table 1.
IRF periods for the current VERITAS instrument configuration.
| Season | MJD range | Data runs | t1 | t2 | t3 | t4 |
|---|---|---|---|---|---|---|
| 2012–2013a | 56124–56367 | 63373–67410 | 0.986 ± 0.056 | 1.039 ± 0.059 | 0.972 ± 0.057 | 0.914 ± 0.056 |
| 2012–2013b | 56367–56588 | 67411–70170 | 0.941 ± 0.055 | 1.023 ± 0.056 | 0.885 ± 0.054 | 0.823 ± 0.052 |
| 2013–2014a | 56588–56778 | 70171–73235 | 0.887 ± 0.021 | 0.958 ± 0.030 | 0.818 ± 0.022 | 0.803 ± 0.018 |
| 2013–2014b | 56778–56968 | 73236–75021 | 0.809 ± 0.042 | 0.878 ± 0.050 | 0.782 ± 0.029 | 0.775 ± 0.036 |
| 2014–2015 | 56968–57242 | 75022–78239 | 0.713 ± 0.027 | 0.821 ± 0.026 | 0.730 ± 0.019 | 0.715 ± 0.019 |
| 2015–2016 | 57242–57600 | 78240–82587 | 0.708 ± 0.022 | 0.772 ± 0.018 | 0.690 ± 0.018 | 0.731 ± 0.018 |
| 2016–2017 | 57600–57966 | 82588–86848 | 0.653 ± 0.016 | 0.774 ± 0.023 | 0.647 ± 0.015 | 0.688 ± 0.024 |
| 2017–2018 | 57966–58331 | 86849–90608 | 0.677 ± 0.023 | 0.748 ± 0.016 | 0.683 ± 0.025 | 0.695 ± 0.027 |
| 2018–2019 | 58331–58696 | 90609–93829 | 0.608 ± 0.021 | 0.678 ± 0.019 | 0.619 ± 0.021 | 0.635 ± 0.024 |
| 2019–2020 | 58696–59061 | 93830–96048 | 0.608 ± 0.017 | 0.698 ± 0.034 | 0.732 ± 0.042 | 0.640 ± 0.015 |
Notes. Definition of IRF periods for the current VERITAS instrument configuration with the covered dates, the corresponding data runs and the values of the total throughput corrections that need to be applied to the simulated event charges to obtain the calibrated MC and IRFs. Only statistical uncertainties were considered in this study.
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