Relative and (maybe) Absolute RHESSI Detector Efficiency: 2002-2008

From RHESSI Wiki

(Difference between revisions)
Jump to: navigation, search
(Have plots, need prose now.)
Line 18: Line 18:
What about absolute sensitivity?
What about absolute sensitivity?
-
[[Image:Hessi_dets_test0.png|400px|thumb|left|'''Figure 2''':GOES Hi channel flux versus RHESSI detector 1 Emission Measure for the full sample.]]
+
[[Image:Hessi_dets_test1.png|400px|thumb|left|'''Figure 2''':60 day averages of the  RHESSI detector 1 Emission Measure to GOES fluxes for the full sample.]]
 +
 
 +
 
 +
[[Image:Hessi_dets_test0.png|400px|thumb|left|'''Figure 3''':GOES Hi channel flux versus RHESSI detector 1 Emission Measure for the full sample.]]
Looks like a blob for small flares, do the same plot for 6 to 20 keV RHESSI detector 1 count rate.
Looks like a blob for small flares, do the same plot for 6 to 20 keV RHESSI detector 1 count rate.
-
[[Image:Hessi_dets_test_ct0.png|400px|thumb|left|'''Figure 3''':GOES Hi channel flux versus RHESSI detector 1 6 to 20 keV count rate for the full sample.]]
+
[[Image:Hessi_dets_test_ct0.png|400px|thumb|left|'''Figure 4''':GOES Hi channel flux versus RHESSI detector 1 6 to 20 keV count rate for the full sample.]]
Restrict to the flares with greater than 1.0e45 emission measure. This leaves 2580 flares.
Restrict to the flares with greater than 1.0e45 emission measure. This leaves 2580 flares.
-
[[Image:Hessi_dets_test_ct04.png|400px|thumb|left|'''Figure 4''':GOES Hi channel flux versus RHESSI detector 1 6 to 20 keV count rate for the flares with EM greater than 1.0e45 cm^(-3).]]
+
[[Image:Hessi_dets_test_ct04.png|400px|thumb|left|'''Figure 5''':GOES Hi channel flux versus RHESSI detector 1 6 to 20 keV count rate for the flares with EM greater than 1.0e45 cm^(-3).]]
Plot 60 day averages as a function of time.
Plot 60 day averages as a function of time.
-
[[Image:Hessi_dets_test_ct14.png|400px|thumb|left|'''Figure 4''':60 day averages of the ratio of RHESSI 6 to 20 keV counts to GOES fluxes for the flares with EM greater than 1.0e45 cm^(-3).]]
+
[[Image:Hessi_dets_test_ct14.png|400px|thumb|left|'''Figure 6''':60 day averages of the ratio of RHESSI 6 to 20 keV counts to GOES fluxes for the flares with EM greater than 1.0e45 cm^(-3).]]
Show samples of flare ratio results for two different time ranges.
Show samples of flare ratio results for two different time ranges.
-
[[Image:Hessi_dets_test_ct24.png|400px|thumb|left|'''Figure 5''':The ratio of RHESSI 6 to 20 keV counts to GOES fluxes for flares with EM greater than 1.0e45 cm^(-3) fortwo different time periods, one early in the mission, one just before anneal,]]
+
[[Image:Hessi_dets_test_ct24.png|400px|thumb|left|'''Figure 7''':The ratio of RHESSI 6 to 20 keV counts to GOES fluxes for flares with EM greater than 1.0e45 cm^(-3) for two different time periods, one early in the mission, one just before anneal,]]
[[Category:Nugget]]
[[Category:Nugget]]

Revision as of 00:39, 22 December 2009


Nugget
Number: 117
1st Author: Jim McTiernan
2nd Author:
Published: 21 December 2009
Next Nugget: TBD
Previous Nugget: A tiny white-light flare
List all



Introduction

RHESSI has now been observing for nearly eight years. How has detector sensitivity changed since it was launched?

Figure 1:This is the relative detector efficiency for front detectors 3, 4, 5, 6, 8, and 9


What about absolute sensitivity?

Figure 2:60 day averages of the RHESSI detector 1 Emission Measure to GOES fluxes for the full sample.


Figure 3:GOES Hi channel flux versus RHESSI detector 1 Emission Measure for the full sample.

Looks like a blob for small flares, do the same plot for 6 to 20 keV RHESSI detector 1 count rate.

Figure 4:GOES Hi channel flux versus RHESSI detector 1 6 to 20 keV count rate for the full sample.

Restrict to the flares with greater than 1.0e45 emission measure. This leaves 2580 flares.

Figure 5:GOES Hi channel flux versus RHESSI detector 1 6 to 20 keV count rate for the flares with EM greater than 1.0e45 cm^(-3).

Plot 60 day averages as a function of time.


Figure 6:60 day averages of the ratio of RHESSI 6 to 20 keV counts to GOES fluxes for the flares with EM greater than 1.0e45 cm^(-3).

Show samples of flare ratio results for two different time ranges.

Figure 7:The ratio of RHESSI 6 to 20 keV counts to GOES fluxes for flares with EM greater than 1.0e45 cm^(-3) for two different time periods, one early in the mission, one just before anneal,
Personal tools
Namespaces
Variants
Actions
Navigation
Toolbox