Difference between revisions of "STIX data center"

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(Flare identification)
(Flare identification)
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4 to 10 keV quick-look light curves are used to identified flares.  
 
4 to 10 keV quick-look light curves are used to identified flares.  
 
Identifications of flares consists of several steps as follows:
 
Identifications of flares consists of several steps as follows:
- Light curve smoothing. 4-sec time bins  are  
+
- Light curve smoothing. 4-sec time bins  are  
 
rebinned to 1 minute time bins in order to filter spikes from the electronics and fluctuation  
 
rebinned to 1 minute time bins in order to filter spikes from the electronics and fluctuation  
 
due to statistics and integral compression;
 
due to statistics and integral compression;

Revision as of 08:48, 6 July 2021

This page is still under construction.

STIX data center is a virtual server hosted at FHNW.

1 STIX Data Center tasks

Its tasks include

  • Process STIX raw data & produce high level data products
  • Monitor Data quality and instrument health status
  • Provide data products and data browsing tools for the Solar Physics Community
  • Support STIX operations
  • Data archiving

2 STIX data center architecture

The data flow at STIX data center is shown in the picture below:

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Data processing SW mainly written in python. NoSQL DB (MongoDB) used to stored telemetry packets, file metadata and configurations

3 Key Algorithms

3.1 Offline flare location solution

3.2 Flare identification

4 to 10 keV quick-look light curves are used to identified flares. Identifications of flares consists of several steps as follows:

- Light curve smoothing. 4-sec time bins  are 

rebinned to 1 minute time bins in order to filter spikes from the electronics and fluctuation due to statistics and integral compression;

The smoothed light curves have time bins of 1 minute. Those during the quiet period of the sun. to calculate the background Quick-look light curves are used for flare identification.

Then the smoothed light curves are used to search for peaks. A flare is considered being detected if a peak satisfies several conditions as follows:

  • The peak counts is above 2 sigma of the background.

4 Source code

The source code can be found at:

5 Developers