The distribution of the damage chart does not support a rapid climb and fall of the aircraft.
From east to west first houses are damaged - an indication that the 747 descended into the settlement, then they become destroyed - that's where they hit the ground, then there are more damaged houses - debris of the wreckage hitting and causing damage.
If it had climbed and the dived down, I would expect a spot with destroyed houses, and then damage in the direction of flight (Where pieces of the wreckage would keep moving).
Nic