Table 1.
ON/OFF analysis (input and output parameters) for the FOXSI-2 observations.
| D101 | D104 | D105 | D108 | All four Det | |
|---|---|---|---|---|---|
| NON (ΔtON = 68.5 s) | 13 | 9 | 10 | 10 | 36 |
| NOFF (ΔtOFF = 24.2 s) | 3 | 1 | 1 | 4 | 9 |
| α | 0.920 | 0.872 | 0.869 | 0.859 | 0.887 |
| P(H0|NON, NOFF, α) | 8.3 × 10−3 | 5.5 × 10−3 | 2.8 × 10−3 | 6.2 × 10−2 | 1.2 × 10−5 |
| Sb | 2.64 | 2.78 | 2.99 | 1.86 | 4.4 |
| λ2σ | 19.09 | 15.52 | 16.83 | 14.73 | 10.5 |
Notes. Input (first three rows) and output (last three rows) parameters of the ON/OFF Li-Ma analysis applied to four of the FOXSI-2 silicon detectors (first four columns). The rightmost column has the ON/OFF Li-Ma parameters for the case in which we combine the data of all four detectors. NON are the counts recorded during the ON configuration of target I/FOXSI-2 observations (green area of Fig. 3). NOFF are the counts for the background observations. α is estimated following Eq. (4) (for individual detectors) and Eq. (7) (for the case of all four detectors combined). P(H0|NON, NOFF) are the probabilities that the null hypothesis (H0) is true given the particular values of NON, NOFF, and α. Sb is the Bayesian significance for the existence of a hypothetical signal s on top of the background during the ON-configured observations. λ2σ is the upper limit (in counts) with a 2σ precision for the flux of such a hypothetical source s.
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