GeoDataFrame.is_valid_reason

>>> from sedona.spark.geopandas import GeoSeries
>>> from shapely.geometry import Polygon
>>> s = GeoSeries(
...     [
...         Polygon([(0, 0), (1, 1), (0, 1)]),
...         Polygon([(0,0), (1, 1), (1, 0), (0, 1)]),  # bowtie geometry
...         Polygon([(0, 0), (2, 2), (2, 0)]),
...         Polygon([(0, 0), (2, 0), (1, 1), (2, 2), (0, 2), (1, 1), (0, 0)]),
...         None
...     ]
... )
>>> s
0         POLYGON ((0 0, 1 1, 0 1, 0 0))
1    POLYGON ((0 0, 1 1, 1 0, 0 1, 0 0))
2         POLYGON ((0 0, 2 2, 2 0, 0 0))
3                                   None
dtype: geometry

>>> s.is_valid_reason()
0    Valid Geometry
1    Self-intersection at or near point (0.5, 0.5, NaN)
2    Valid Geometry
3    Ring Self-intersection at or near point (1.0, 1.0)
4    None
dtype: object

is_valid_reason()