An initial study of neutron detection in the near detector ND280 of T2K was done. Monte Carlo data simulated for muon antineutrino interactions on a CH active target with energies about 0.6 GeV was analysed. Kinematics of quasi-elastic scattering was reconstructed using time-of-flight technique. Efficiency of neutron detection, kinematics of secondary particles were measured and energy distribution of neutrino events were reconstructed. Parameters obtained in this analysis will be applied for analysis of experimental data.