  We present a systematic analysis of transverse momentum $(p_{T})$ spectra of
the strange hadrons in different multiplicity events produced in pp collision
at $\sqrt{s}$ = 7 TeV, pPb collision at $\sqrt{s_{NN}}$ = 5.02 TeV and PbPb
collision at $\sqrt{s_{NN}}$ = 2.76 TeV. Both the single and differential
freeze out scenarios of strange hadrons $K^0_s$, $\Lambda$ and $\Xi^-$ are
considered while fitting using a Tsallis distribution which is modified to
include transverse flow. The $p_{T}$ distributions of these hadrons in
different systems are characterized in terms of the parameters namely, Tsallis
temperature $(T)$, power $(n)$ and average transverse flow velocity $(\beta)$.
  It is found that for all the systems, transverse flow increases as we move
from lower to higher multiplicity events. In the case of the differential
freeze-out scenario, the degree of thermalization remains similar for events of
different multiplicity classes in all the three systems. The Tsallis
temperature increases with the mass of the hadrons and also increases with the
event multiplicity in pp and pPb system but shows little variation with the
multiplicity in PbPb system. In the case of the single freeze-out scenario, the
difference between small systems (pp, pPb) and PbPb system becomes more
evident. The high multiplicity PbPb events show higher degree of thermalization
as compared to the events of pp and pPb systems. The trend of variation of the
temperature in PbPb system with event multiplicity is opposite to what is found
in the pp and pPb systems.
