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Neutrinos are allowed to mix and to oscillate among their flavor. Muon andtau in particular oscillate at largest values.Last Minos experiment claimedpossible difference among their matter and anti-matter masses, leading to afirst violation of the most believed CPT symmetry.Isotropically bornatmospheric muon neutrino at 20-80 GeV, while up-going, they might be partiallysuppressed by mixing in analogy to historical SuperKamiokande muon neutrinodisappearance into tau, leading to large scale anisotropy signals. Here we showan independent muon rate foreseen in Deep Core based on observed SK signalsextrapolated to DeepCore mass and its surrounding. Our rate predictionpartially differ from previous ones. The neutrino muon disappearance into tauis leading to an anisotropy in vertical up-going muon track: in particularalong channel 3-5 we expect a huge rate (tens of thousand of events) of neutralcurrent events, charged current electron and inclined crossing muons. Moreoverat channel 6-9 we expect a severe suppression of the rate due to muondisappearance (in CPT conserved frame). Such an anisotropy might be partiallytested by more than one string detection at E> 45 GeV energy. A CPT violationmay induce a more remarkable suppression of vertical up-going tracks because oflarger anti-neutrino muon reduction for E> 35 GeV.

Deep Core muon neutrino rate and anisotropy by mixing and CPT violation