  The recently published Gaia DR3 catalog of 181327 spectroscopic binaries (SB)
includes the Keplerian elements of each orbit but not the measured radial
velocities (RVs) and their epochs. Instead, the catalog lists a few parameters
that characterize the robustness of each solution. In this work, we use two
external sources to validate the orbits - 17563 LAMOST DR6 and 6018 GALAH DR3
stars with measured RVs that have Gaia-SB orbits. We compare the expected RVs,
based on the Gaia orbits, with the LAMOST and GALAH measurements. Finding some
orbits that are inconsistent with these measurements, we constructed a function
that estimates the probability of each of the Gaia orbits to be correct, using
the published robust parameters. We devise a clean but still very large Gaia
SB1 sample of 91740 orbits. The sample differs from the parent sample by the
absence of - physically unlikely and hence presumably spurious - short-period
binaries with high eccentricity. The clean SB1 sample offers the prospect of
thorough statistical studies of the binary population after carefully modeling
of the remaining selection effects. At a first look, two possible features
emerge from the clean sample - a paucity of short-period binaries with low-mass
primaries, which might be a result of some observational bias, and a sub-sample
of main-sequence binaries on circular orbits, probable evidence for
circularization processes.
