Characterization of Random Telegraph Noise in an H2RG X-ray Hybrid CMOS Detector
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2025
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| author | Bevidas Jr., William A. Colosimo, Joseph M. Falcone, Abraham D. Emeigh, Timothy Stone, Lukas R. Nizam, Kadri M. Bortree, Brynn Buffington, Jacob C. Burrows, David N. Catlin, Zachary E. Gremling, Killian M. Hossen, Md. Arman Reichard, Collin Scigliani, Ana C. Tavana, Anthony J. Wages, Mitchell |
| author_facet | Bevidas Jr., William A. Colosimo, Joseph M. Falcone, Abraham D. Emeigh, Timothy Stone, Lukas R. Nizam, Kadri M. Bortree, Brynn Buffington, Jacob C. Burrows, David N. Catlin, Zachary E. Gremling, Killian M. Hossen, Md. Arman Reichard, Collin Scigliani, Ana C. Tavana, Anthony J. Wages, Mitchell |
| contents | Hybrid CMOS detectors (HCDs) have several excellent features as high-performance X-ray detectors, including rapid readout, deep-depletion silicon for high quantum efficiency, radiation hardness, and low power. Random telegraph noise (RTN) is a type of noise that can reduce the performance of HCDs and other CMOS sensors. After finding and quantifying RTN in the recently developed engineering grade Speedster-EXD550 HCDs, this form of noise has also been found in other X-ray HCDs. This paper aims to investigate its presence and characteristics in the relatively mature H2RG X-ray HCD and to compare it with that of the Speedster-EXD550. We use archival data taken with an H2RG X-ray HCD at two different temperatures to determine the percentage of pixels that are being impacted by RTN. We identify RTN in 0.42% of pixels when the detector is operated at 140 K, while we are only able to identify RTN in 0.060% of pixels when the detector is operated at 160 K. We characterize RTN in two Speedster-EXD550 detectors, identifying 5.1% of pixels with RTN in one detector and 7.1% in another, which is significantly more than the H2RG. These results verify the difference between two different HCDs and provide techniques that can be applied to future hybrid CMOS detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_16221 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Characterization of Random Telegraph Noise in an H2RG X-ray Hybrid CMOS Detector Bevidas Jr., William A. Colosimo, Joseph M. Falcone, Abraham D. Emeigh, Timothy Stone, Lukas R. Nizam, Kadri M. Bortree, Brynn Buffington, Jacob C. Burrows, David N. Catlin, Zachary E. Gremling, Killian M. Hossen, Md. Arman Reichard, Collin Scigliani, Ana C. Tavana, Anthony J. Wages, Mitchell Instrumentation and Methods for Astrophysics Hybrid CMOS detectors (HCDs) have several excellent features as high-performance X-ray detectors, including rapid readout, deep-depletion silicon for high quantum efficiency, radiation hardness, and low power. Random telegraph noise (RTN) is a type of noise that can reduce the performance of HCDs and other CMOS sensors. After finding and quantifying RTN in the recently developed engineering grade Speedster-EXD550 HCDs, this form of noise has also been found in other X-ray HCDs. This paper aims to investigate its presence and characteristics in the relatively mature H2RG X-ray HCD and to compare it with that of the Speedster-EXD550. We use archival data taken with an H2RG X-ray HCD at two different temperatures to determine the percentage of pixels that are being impacted by RTN. We identify RTN in 0.42% of pixels when the detector is operated at 140 K, while we are only able to identify RTN in 0.060% of pixels when the detector is operated at 160 K. We characterize RTN in two Speedster-EXD550 detectors, identifying 5.1% of pixels with RTN in one detector and 7.1% in another, which is significantly more than the H2RG. These results verify the difference between two different HCDs and provide techniques that can be applied to future hybrid CMOS detectors. |
| title | Characterization of Random Telegraph Noise in an H2RG X-ray Hybrid CMOS Detector |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2503.16221 |