The Agilex™ 7 Power Management User Guide lists available temperature sensor locations and TSDs for different Agilex™ 7 device densities.
However, due to a problem in Quartus® Prime PTC tool version 23.1, the thermal page displays unavailable sensors that do not match the ones listed as available. This happens for devices whose specifications are currently in the advanced or preliminary stage.
You should consider only the sensors that match the ones displayed as available in the Agilex™ 7 Power Management User Guide.