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Data Analysis of AstroPi data taken on the ISS.
#Pressure Analysis
##Data files: Columbus1: https://github.com/raspberrypilearning/astro-pi-flight-data-analysis/raw/master/data/Columbus_Ed_astro_pi_datalog.csv.zip Columbus2: https://github.com/raspberrypilearning/astro-pi-flight-data-analysis/raw/master/data/Columbus2_Ed_astro_pi_datalog.csv.zip
##Problem 1: The ISS regularly 'tops' up with oxygen. This can be detected by plotting the air pressure recorded by the AstroPi unit.
##How: Data is extracted from the CSV using import2weeks.m Pressure readings are plotted day by day to analyse the daily trends of pressure onboard the ISS. ..Test
##Results: ###Columbus It was noted that on 25/02/2016 between 1200hrs and 1500hrs there was a spike in air pressure from the normal reading of approx. 1008mb to 1022mb.
####Special Update!!#### @DLR_en tweeted me and they suspect as I had done a few weeks ago that the sudden spike might be to do wih the Airway Monitoring Experiment, mentioned in more detail on a NASA page
###Columbus2
Further sudden increases in air pressure also occur on the following dates
15/03
17/03
24/03
27/03
These however seem to last for much longer that the few hours that the others did.
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#Problem 2: I suspected that as re-supply vehicles arrived there would be a short drop in pressure due to the increased volume of the space station. I looked on wikipedia for the list of ISS re-supply missions and focused on the Cygnus CRS OA-6 Mission since that was in the window of the data collected by Columbus2.
#Results:
I noted a small sudden drop in pressure on the 26 March 2016. I wonder if this ties in with the berthing of the Cygnus CRS OA-6 ? Then the day later there is another O2 re-supply, potentially from the newly docked module.
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#Can you confirm my findings?
I'd love to know if my findings are accurate and actually equate to real ISS events. Please get in touch. I am @scottofthedead1 on twitter and scotty101 on the Raspberry Pi forums. I've posted a link to these findings on the Raspberry Pi Forums, so you can also respond there. https://www.raspberrypi.org/forums/viewtopic.php?f=104&t=148621&p=977685#p977685