We report precise measurements of the mass and the decay width of the top quark in the $\it{t}$-channel, which is the most dominant production process for single top quarks at the LHC. The final state comprises a top quark along with a light quark, giving rise to at least two jets, of which one arises from the hadronization of a b-quark, an isolated high-momentum lepton (electron or muon), and a large missing transverse momentum due to an escaping neutrino from the W boson decay. The study uses proton-proton collision data recorded by the CMS experiment. Dominant standard model backgrounds are studied in complementary regions, and different techniques will be presented to separate the signal from these backgrounds.