Maybe providing a direct link to the specific data would be useful for anyone trying to assist you. There are hundreds of sensors, some spanning multiple platforms, over decades, and new ones coming online, and then each one usually has various levels of processing from raw data through various corrections. There are also derivative data products which are fused from individual time series.

Normally, you can see that in metadata. Also, you can see it in the characteristics of the acquisition sensor."

Michael John Patrick, Thank you..

All other information (such as band, swath width, altitude, etc.) except stitching, will be obtained if we navigate via various sensor sites. I simply want to know if there is stitching involved in these satellite data.

Deepthi .. INRE: "mosaiced or stitched". Without knowing the specifics, the answer is that "some is, and some is not". Some are even 'stitched' temporally for the real time products ( ex. https://www.nasa.gov/nasa-earth-exchange-nex/earth-observations-geonex/data-products/ ). The metadata for an individual granule / tile / scene may or may not include the overall information processing that occurred, those are in the documentation for the overall collection / campaign / application ( Ex. the NASAdem, which has evolved over decades from the original SRTM elevation only products to the current parallel NASADEM_SC data product layers including slope, aspect angle, profile curvature, plan curvature, and water mask. Another is the Harmonized Landsat and Sentinel-2 (HLS) series, and GeoNEX. If the product is from a commercial provider, there be even more factors.

You 'simply' want what is involved, unfortunately the algorithms in play for your specific data product may or may not be so simple - and for somebody else impossible without knowing exactly what you are referring to.