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NuSTAR low energy effective area correction due to thermal blanket tear

Madsen, Kristin K. and Grefenstette, Brian W. and Pike, Sean and Miyasaka, Hiromasa and Brightman, Murray and Forster, Karl and Harrison, Fiona A. (2020) NuSTAR low energy effective area correction due to thermal blanket tear. . (Unpublished)

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A rip in the MLI at the exit aperture of OMA, the NuSTAR optic aligned with detector focal plane module FPMA, has resulted in an increased photon flux through OMA that has manifested itself as a low energy excess. Overall, the MLI coverage has decreased by 10%, but there is an additional time-varying component, which occasionally causes the opening to increase by up to 20%. We address the problem with a calibration update, and in this paper, we describe the attributes of the problem, the implications it has on data analysis, and the solution.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Madsen, Kristin K.0000-0003-1252-4891
Grefenstette, Brian W.0000-0002-1984-2932
Pike, Sean0000-0002-8403-0041
Miyasaka, Hiromasa0000-0002-8074-4186
Brightman, Murray0000-0002-8147-2602
Forster, Karl0000-0001-5800-5531
Harrison, Fiona A.0000-0003-2992-8024
Additional Information:This work was supported under NASA Contract No. NNG08FD60C, and made use of data from the NuSTAR mission, a project led by the California Institute of Technology, managed by the Jet Propulsion Laboratory, and funded by the National Aeronautics and Space Administration. We thank the NuSTAR Operations, Software and Calibration teams for support with the execution and analysis of these observations. This research has made use of the NuSTAR Data Analysis Software (NuSTARDAS) jointly developed by the ASI Science Data Center (ASDC, Italy) and the California Institute of Technology (USA). Facility: NuSTAR This document serves as a technical note for the NuSTAR CALDB version 20200429. The CADLB release is the first in a two parts made to address the problem described in the paper. The paper will be updated with the second release, and will be submitted to a journal after the final release.
Group:Astronomy Department, Space Radiation Laboratory, NuSTAR
Funding AgencyGrant Number
Subject Keywords:space vehicles: instruments
Record Number:CaltechAUTHORS:20200604-151455025
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103715
Deposited By: George Porter
Deposited On:05 Jun 2020 14:26
Last Modified:05 Jun 2020 14:26

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