The definition of scatty is British slang and means disorganized, scatterbrained or absent minded.
If you are constantly looking for your keys, wallet, glasses and other personal items, this is an example of a time when you would be described as scatty.
Brit., Slang silly, foolish, or crazy
Origin of scattycontr. ; from uncertain or unknown; perhaps scatterbrained
adjectivescat·ti·er, scat·ti·est Chiefly British
Scatterbrained; flighty: “the scatty, glancing quality of a hyperactive but unfocused intelligence” (London Review of Books).
Origin of scattyProbably scatt(erbrain) + –y1.