  XB 1254-690 is a neutron star low-mass X-ray binary with an orbital period of
3.88 hrs, and it exhibits energy-dependent intensity dips, thermonuclear
bursts, and flares. We present the results of an analysis of a long observation
of this source using the AstroSat satellite. The X-ray light curve gradually
changed from a high-intensity flaring state to a low-intensity one with a few
dips. The hardness intensity diagram showed that the source is in a
high-intensity banana state with a gradually changing flux. Based on this, we
divide the observation into four flux levels for a flux-resolved spectral
study. The X-ray spectra can be explained by a model consisting of absorption,
thermal emission from the disc and non-thermal emission from the corona. From
our studies, we detect a correlation between the temperature of the thermal
component and the flux and we examine the implications of our results for the
accretion disc geometry of this source.
