[en] In the present work, minimal unitarity violation scheme has been considered to obtain the general expression for νμ→ντ oscillation probability in vacuum and matter. For this channel, the sensitivities of short baseline experiments to non-unitary parameters |ρμτ| and ωμτ for normal as well as inverted hierarchical neutrino masses and θ23 being above or below maximality, have been investigated. It has been found that for normal hierarchy, the 3σ sensitivity of |ρμτ| is maximum for non-unitary phase ωμτ=0 whereas it is minimum for ωμτ=±π. For inverted hierarchy, the sensitivity is minimum at ωμτ=0 and maximum for ωμτ=±π. It has been observed that the sensitivity to measure non-unitarity remains unaffected for unitary CP phase δ=0 or δ=π/2. Wide spectrum of L/E ratio has been explored to investigate the possibilities to observe CP-violation due to unitary (δ) and non-unitary (ωμτ) phases. It has been found that the both phases can be disentangled, in principle, from each other for L/E<200 km/GeV