  We present improved physical parameters for four hot Jupiters: KELT-7 b,
HAT-P-14 b, WASP-29 b, WASP-95 b, and a hot Neptune: WASP-156 b, by performing
critical and rigorous analysis of the time-series observations from the
Transiting Exoplanet Survey Satellite (TESS). Being a space-based telescope,
the transit photometric data obtained by TESS are free from any noise component
due to the interference of Earth's atmosphere. In our analysis of the observed
data, we have used critical noise reduction techniques, e.g., the wavelet
denoising and Gaussian process regression, in order to effectively reduce the
noise components that arise from other sources, such as various instrumental
effects and the stellar activity and pulsations. The better quality of
photometric data from TESS, combined with our state-of-the-art noise reduction
and analysis technique, has resulted into more accurate and precise values of
the physical properties for the target exoplanets than that reported in earlier
works.
