  Recent observational evidence in extra galactic astronomy, the interpretation
of the nature of quasar redshift continues to be research interest. Spectrum
observation of high redshift quasar is young in nature. Observational evidence
discuss on physical interpretation of redshift periodicity with statistical
confirmation. Karlsson observed redshift periodicity at integer multiples of
0.089 in log scale and Burbidge observed redshift periodicity integer multiple
of 0.061 in linear scale .Data analysis is important in order to form correct
interpretations of the observed phenomena. Since Singular value decomposition
(SVD) based periodicity estimation is known to be superior for noisy data sets,
especially when the data contains multiple harmonics and overtones, mainly
irregular in nature, we have chosen it to be our primary tool for analysis of
the quasar-galaxy pair redshift data. Kernel density estimation has been
performed for estimating the bin width as proper computation of this quantity
is crucial for the correctness of the analysis and prevention of over smoothing
of the data.We observed fundamental periodicity to be an integer multiple of
0.063 and 0.0604 using method1 and method2 in the transformed quasar redshift
data with 95% confidence interval in linear scale. Our results clearly
establish that redshift is quantized for quasar-galaxy pair data and its
histogram exhibits periodic peak(s). At last briefly discussed on physical
interpretation of quantized redshift for quasar and galaxy.Hoyle Narlikar
theory of gravity explain the Mystery in recent observation.
