Not abed (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not abed</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for astir that I've seen before include "in the land of the living" , "Moving; out of bed" , "Excitedly moving" , "abroad" , "Awake and out of bed" .)