We present a very detailed analysis of Chandra and XMM–Newton observations of XLSSJ022403.9-041328 galaxy cluster of z=1, which was detected during the XMM-Newton Large Scale Structure survey. To define the “luminosity-temperature-mass”, LX–TX–M, scaling relations we built temperature, surface brightness, density, and mass profiles. The total gravitational mass of this cluster was taken within the scaled radius, R500, was determined under the assumption of hydrostatic equilibrium for intercluster gas and spherical symmetry of a cluster.
The temperature of XLSSJ022403.9-041328 was found to be 4.5±0.7 keV from the Chandra data, and 3.8±0.3 from the XMM–Newton data. The total gravitational mass is equal to 1.44±0.23×1014M⊙ at the corresponding radius, while the fraction of gas is equal to 15 % of a total mass. These values were used to define the XLSSJ022403.9-041328 galaxy cluster at the LX–TX–Mg scaling relations, and for all of these cases we got agreement which fitting well with self-similar model. This research permits us to use LX–TX–M relations for galaxy clusters at a highest redshift in the cosmological probes.