Recommendation
The article should be accepted, although I recommend three substantive and a few minor modifications.
Detailed review
This article and the linked code give a detailed reproduction of the first claimed detection of gravitational waves through a binary black hole merger. The challenges are outlined in detail. All code and data is available through stable links (the importance of which is clearly demonstrated in the paper, as certain discrepancies are linked to slightly different data usage, and other steps are no longer available through the LIGO repositories).
This article was posted on the arxiv at
https://arxiv.org/abs/2010.07244. The arxiv link did not use the arxiv Labs "Links to Code" feature, but all code and data file links are given in the paper.
As part of this review I ran the scripts on local resources and checked which steps worked. The amount of computing time needed to run the scripts on local resources is greater than the time available for the review, but I am confident that, with time, the full figure could be reproduced from the material provided here.
Suggested modifications