Table 4: Best fit parameters to EPIC data using a plasma emission model built from the MEKAL code in which the emission measure distribution follows a power-law in temperature of the forme $EM_{\rm max} \times (T/T_{\rm max})^{\alpha }$ .
Flares period Quiescent period

$N_{\rm H}$ (cm^-2) 10¹⁸ (frozen) 10¹⁸ (frozen)

Z 0.31 $\pm$ 0.02 0.24 $\pm$ 0.08

$kT_{\rm max}$ (keV) 1.31 $\pm$ 0.05 1.08 $\pm$ 0.02

$\alpha$ 0.84 $\pm$ 0.07 1.03 $\pm$ 0.05

$EM_{\rm max}$ (10⁵² cm^-3) 5.5 $\pm$ 0.5 6.6 $\pm$ 0.3

$\chi^{2}$ 1.09 (259/237 d.o.f.) 1.45 (487/335 d.o.f.)

**Table 4:** Best fit parameters to EPIC data using a plasma emission model built from the MEKAL code in which the emission measure distribution follows a power-law in temperature of the forme $EM_{\rm max} \times (T/T_{\rm max})^{\alpha }$ .
	Flares period	Quiescent period
$N_{\rm H}$ (cm^-2)	10¹⁸ (frozen)	10¹⁸ (frozen)
Z	0.31 $\pm$ 0.02	0.24 $\pm$ 0.08
$kT_{\rm max}$ (keV)	1.31 $\pm$ 0.05	1.08 $\pm$ 0.02
$\alpha$	0.84 $\pm$ 0.07	1.03 $\pm$ 0.05
$EM_{\rm max}$ (10⁵² cm^-3)	5.5 $\pm$ 0.5	6.6 $\pm$ 0.3
$\chi^{2}$	1.09 (259/237 d.o.f.)	1.45 (487/335 d.o.f.)

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