The Density Of Hot Pixels

Hot pixels appear as bright spots on the detector and are easily identified in dark exposures. It has been noticed that their number increases with the exposure time (see Fig. 4). For the most common values used in imaging mode the density of hot pixels remains ~0.1%. It begins to increase rapidly for exposures times longer than 40s, reaching values of ~0.5% at 600s.

Figure 3. The signal jump across quadrants as a function of the mean signal value.

HOT PIXELS BY SECTIONS VS INTEGRATION TME

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Figure 4. Density of hot pixels as function of exposure time. Each panel represents a detector quadrant, which behave similarly to each other.

Figure 4. Density of hot pixels as function of exposure time. Each panel represents a detector quadrant, which behave similarly to each other.

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