Crossword Genius

Criminally falsified data — not a particularly healthy state (3,2,1,6)

Ross

I believe the answer is:

fit as a fiddle

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'particularly healthy state' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'criminally falsified data not a' is the wordplay.
'criminally' indicates anagramming the letters.
'not' suggests deleting specific letters.
'falsified'+'data'='falsifieddata'
'falsifieddata' with 'a' removed is 'flsifieddata'.
'flsifieddata' with letters rearranged gives 'FIT AS A FIDDLE'.

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(Other definitions for fit as a fiddle that I've seen before include "In very good health" , "Bouncing with health" , "What item must do to go into violin case" , "Flourishing" , "Extremely healthy" .)

I've seen this clue in The Times.
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