  The TESS mission has provided the community with high-precision times series
photometry for $\sim$2.8 million stars across the entire sky via the Full Frame
Image (FFI) light curves produced by the TESS Science Processing Operations
Centre (SPOC). This set of light curves is an extremely valuable resource for
the discovery of transiting exoplanets and other stellar science. However, due
to the sample selection, this set of light curves does not constitute a
magnitude limited sample. In order to understand the effects of this sample
selection, we use Gaia DR2 and DR3 to study the properties of the stars in the
TESS-SPOC FFI light curve set, with the aim of providing vital context for
further research using the sample. We report on the properties of the TESS-SPOC
FFI Targets in Sectors 1 - 55 (covering Cycles 1 - 4). We cross-match the
TESS-SPOC FFI Targets with the Gaia DR2 and DR3 catalogues of all targets
brighter than Gaia magnitude 14 to understand the effects of sample selection
on the overall stellar properties. This includes Gaia magnitude, parallax,
radius, temperature, non-single star flags, luminosity, radial velocity and
stellar surface gravity. In total, there are $\sim$16.7 million Gaia targets
brighter than G=14, which when cross-matched with the TESS-SPOC FFI Targets
leaves $\sim$2.75 million. We investigate the binarity of each TESS-SPOC FFI
Target and calculate the radius detection limit from two detected TESS transits
which could be detected around each target. Finally, we create a comprehensive
main sequence TESS-SPOC FFI Target sample which can be utilised in future
studies.
