Astronomy & Astrophysics

Table 2: The values of the relative normalizations between the flux level from different detectors implied by our data.
Instruments E₁-E₂ [ keV]^a Ratio^b

HEXTE 0/PCA(2) 18-120 $0.71\pm 0.04$

HEXTE 1/PCA(2) 18-120 $0.70\pm 0.05$

JEM-X/PCA(2)^c 2.6-27 $0.33\pm 0.01$

JEM-X/PCA(3)^c 2.6-27 $0.65\pm 0.01$

ISGRI/JEM-X 35-220 $4.7\pm 0.2$

SPI/JEM-X 23-100 $2.3\pm 0.1$

^a The energy range of the first of the two compared instruments used to derive the ratio.
^b The uncertainties are 1- $\sigma$ .
^c The JEM-X spectrum should have about the same level as an average of the PCA (2) and (3)
spectra, which implies the renormalization factor of $\sim$ 0.44.

**Table 2:** The values of the relative normalizations between the flux level from different detectors implied by our data.
Instruments	E₁-E₂ [ keV]^a	Ratio^b
HEXTE 0/PCA(2)	18-120	$0.71\pm 0.04$
HEXTE 1/PCA(2)	18-120	$0.70\pm 0.05$
JEM-X/PCA(2)^c	2.6-27	$0.33\pm 0.01$
JEM-X/PCA(3)^c	2.6-27	$0.65\pm 0.01$
ISGRI/JEM-X	35-220	$4.7\pm 0.2$
SPI/JEM-X	23-100	$2.3\pm 0.1$

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