Comment in GW150914.py

Adding a comment in GW150914.py for running pe on other events available on LOSC. The comment simply suggests to specify the kwargs "tag" for some event, e.g. for GW170817 the kwarg "tag" is required to download the data.

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Hi @virginia.demilio , that is useful to know! Do things not run without that?

Thanks @gregory.ashton! For some events (I found GW170817, GW170608 and GW170814) gwpy TimeSeries requires you to specify a tag in order to download the data. For other events like GW150914 is not necessary and the tag argument can be omitted.

Do you know why this is the case? It's strange that it's required for some events, but not all. Is the data for these events being processed differently for some reason?

For some events there are multiple versions of the data, which are labelled with a tag (CLN “clean data”, C00 or C01 “raw data”). Hope this is helpful!

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mentioned in commit cc419777

merged