Why certain region dont have sentinel 1C and 1D?

Hi,

I just realized that above data are unavailable in Malaysia. Does anyone know the reason?

You can check the acquisition plans on the ESA website. These are KML files, you can load them in Google Earth and visualize the coverage together with information about sensing modes. Indeed it looks like there is no planned coverage for Malaysia, at least for the second part of May 2026.

@MrSquidward Thank you for your reply and providing the website to check the coverage of Sentinel-1.