  An efficient method for assessing the quality of quantum state tomography is
developed. Special attention is paid to the tomography of multipartite systems
in terms of unbiased measurements. Although the overall reconstruction errors
of different sets of mutually unbiased bases are the same, differences appear
when particular aspects of the measured system are contemplated. This point is
illustrated by estimating the fidelities of genuinely tripartite entangled
states.
