high resolution lightcurves

[Péter Veres]

Hi,

I'd like to plot RHESSI high resolution lightcurves, say with 0.05 s bins. Can this be done with sunpy?

Thanks,

Peter

[Stuart Mumford]

Hi Peter,

Do you have a link to some of the data? I see no reason why this should not be possible.

Stuart

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[Péter Veres]

Hi Stuart,

Yes, I have e.g.

hsi_20170402_204840_003.fits

from 

https://hesperia.gsfc.nasa.gov/hessidata/2017/04/02/

Would this work?

Thanks,

Peter

[Stuart Mumford]

Hi Peter,

This data seems rather more complex than I expected.

SunPy currently only supports the summary data if I am not mistaken. Do you have any information on the data product you linked me to?

Steve might have a better context for discussion than I do.

Stuart

[Péter Veres]

Hi Stuart,

Thanks for looking into this. I found these files by just browsing for RHESSI data, after the SunPy summary data didn't have the resolution I was after.

Thanks,

Peter

[Richard Schwartz]

Peter

What you found are RHESSI value-added telemetry files.  Most of what is in there are discrete events recorded with better than 1 msec absolute and 1 usec relative precision.  But there is a lot of software between those files and useful lightcurves.  So please tell me what you want to do scientifically and I may be able to help you by producing time-series in FITS files that you can play with using SunPy. But I hope you know that RHESSI is a rotating modulation collimator so for solar purposes a high time resolution signal may be problematic.

Richard Schwartz

[Péter Veres]

Hi Richard,

I'd need a lightcurve from 2017/04/02 21:51:00 up to 21:53:00 the same day. I saw from the low res plots that the data ends somewhere in this interval. That's fine. 8 msec resolution would be great. 

Thank you!

Peter

[Steven Christe]

Hi Peter, could you let us know what you are thinking of using this data for? As Richard mentioned, the spacecraft rotates (this enables imaging) so there is a modulation at the rotation speed of ~4 s rotation rate. A few methods do exist to remove that rotation but they require a bit of work. This is why most of the light curve data (like the summary data are binned in 4s bins).