You have been issued a "Limited Territorial Validity (LTV)" visa, which only allows you to enter France. You are NOT allowed exit France to any other Schengen state using this visa, nor are you allowed transit/enter any other Schengen state on this or a future trip.
You can confirm this by looking at the 29th character on the 2nd row of the machine readable area of the visa (the 2 rows at the bottom that you have masked) - it should show 'T' to record that this is an LTV.
Limited Territorial Validity visas would normally be issued where you do not meet the requirements for a Schengen visa, but the country issuing the visa still wants to allow you access. This could include, for example, if you are planning to be in the Schengen region (including the time in the country the visa is for) for greater than 90 days out of any 180 day period, which would normally not be allowed using an Schengen visa.
It is also possible that the visa was issued as an LTV in error, but that is something you'd need to discuss with the issuing consulate to determine.
To answer your specific questions, NO, you can NOT (legally) travel to Austria and Switzerland, even if only for a few days, and NO, you can NOT travel to Switzerland in September using this visa. It is certainly possible that you could physically travel to Austria and Switzerland (especially if travelling by rail rather than air), but doing so would be illegal and leave you liable to deportation.