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Table 3

Significance levels (in %) associated with χ2 tests for constancy of the background-corrected XMM-Newton light curves with 1 ks bins.

Inst. XMM-1 XMM-2 XMM-3 XMM-4
T S H T S H T S H T S H

pn 69 71 34 3 62 <1 23 42 21 <1 <1 <1
MOS1 14 39 3 89 64 41 <1 10 <1 <1 <1 <1
MOS2 77 71 56 70 86 73 27 19 54 <1 4 <1

Notes. A value lower than 1% is considered as a detection of significant variability. S, H, and T refer to the 0.4–2.0 keV, 2.0–10.0 keV and 0.4–10.0 keV energy bands, respectively.

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