Posterior distribution of the model fit parameters for the galaxy cluster PSZ2 G313.33+61.13 obtained using SZ data from Planck and ACT, as well as X-ray data from XMM-Newton. The vertical red lines indicate the median value from the accepted MCMC samples, with values displayed along with their 68% credible regions above each histogram. Instead of the Euler angles φ and ψ, we present e_∥, which is a function of five geometric parameters of a triaxial ellipsoid (Eq. (6)).