We have discussed conditions under which probability of oscillation($\nu_e\rightarrow \nu_{\mu}$) is independent of CP violating phase $\delta$.The condition of magic baseline on its length is well-known. We have proposedanother condition which is on neutrino energy. We have shown that magicbaseline condition is not possible in general, for small $\theta_{13}$ withnon-standard interaction and for large $\theta_{13}$ with both standard andnon-standard interactions. However, neutrino energy condition is possible forsuch cases as well as for cases where magic baseline condition is applicable.We have discussed how one may resolve hierarchy problem for neutrino masses byusing such energy condition. For a baseline of length 650 Km, using this energycondition we discuss the possible number of $\mu^-$ events at the detector fora period of 5 years and also the sensitivity in measurement of $\cos^2\theta_{13}$.
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