Bad article dutifully pinned on the notice-board? (4)

I believe the answer is:

rota

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'dutifully pinned on the notice-board?' is the definition.
I can't tell whether this definition defines the answer.

'bad article' is the wordplay.
'bad' becomes 'rot' (I've seen this before).
'article' becomes 'a' (English indefinite article).
'rot'+'a'='ROTA'

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(Other definitions for rota that I've seen before include "supreme Catholic court" , "Cycle of duty" , "Task list, roster" , "Register of names for duties" , "List of duties taken in turn" .)

I've seen this clue in the Evening Standard.

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