Initial requirement for a Mig21 like role (escort and limited ground attack) only demand integration of bombs & the a2a missiles in the inventory like ASRAAM R-73 etc and the gun firing. That work was also pending for the likely new built Mk1a , which led to the campaign trial earlier this month from 15th to 22 September notam. The new built Mk1a needs to fire these initial integrated weapons as firing trial before delivery so user can undertake mission & training with these. Even that work was also delayed possibly owing to engines maybe. Anyway we won't know the exact reason unless revealed.
Astra firing is likely NOT a precondition for Mk1a delivery simply because the development project of Astra integration into LCA (AIL) is not complete from DRDL side therefore not cleared for batch integration. IAF would want the existing inventory role item weapon trials first. If Astra is not yet completed development trials, IAF won't ask for it right away unless pressing need due to recent events. But this would be speculative at most & the crux of the work still remain with DRDL. HAL takes flack due to being the delivery agency.
Rest weapons are below ones per the universal loading trolley doc which items to be carried by this trolley, also the 1200lt & 800lt drop tank & JDAM.
Not necessarily the full picture but some conclusion can be drawn.
Other standoff weapons are not shown ie SAAW.
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