Spectral and temporal studies of Swift J1658.2–4242 using <i>AstroSat</i> observations with <tt>JeTCAF</tt> model

We present the X-ray spectral and temporal analysis of black hole transient Swift J1658.2--4242 observed by {\it AstroSat}. Three epochs data have been analysed using JeTCAF model to estimate mass accretion rates understand geometry flow. The best-fit disc rate ($\dot m_d$) varies between $0.90^{+0.02}_{-0.01}$ $1.09^{+0.04}_{-0.03}$ $\dot M_{\rm Edd}$ in these observations, while halo changes from $0.15^{+0.01}_{-0.01}$ $0.25^{+0.02}_{-0.01}$ Edd}$. size dynamic corona, that substantially $64.9^{+3.9}_{-3.1}$ $34.5^{+2.0}_{-1.5}$ $r_g$ a moderately high jet/outflow collimation factor stipulates isotropic outflow. inferred bigger corona indicate source might be intermediate soft state binaries. estimated different combinations is $\sim 14 M_\odot$. In addition, we compute quasi-periodic oscillation (QPO) frequencies model-fitted parameters, which match QPOs. further calculate binary parameters system decay profile light curve parameters. orbital period $4.0\pm0.4$ hr assuming companion as mid or late K-type star. Our sheds on physical origin spectro-temporal behaviour source, properties are mainly due change both absorbing column density.