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--- data:data_analysis_manual [2024/01/17 16:26]
Peter Young [Units and uncertainties]
+++ data:data_analysis_manual [2024/01/23 19:27]
eric buchlin [Burn-in Effects] corrected files published in data release 4.0
@@ Line 95: / Line 95: @@
 ==== Burn-in Effects ====
-The SPICE detectors have microchannel plates (MCPs). Over time, the sensitivity of MCPs decreases at the locations of strong emission lines. This effect is referred to as "burn-in" and results in a flat-top or "self-reversal" to the line profile. This has already been noticed for the C III 977 line. As of November 2023, internal level-2 files are corrected for burn-in for six lines (files planned to be part of release 4.0). The effects of burn-in continue to be monitored, particularly for weaker lines for which a correction is not currently available.
+The SPICE detectors have microchannel plates (MCPs). Over time, the sensitivity of MCPs decreases at the locations of strong emission lines. This effect is referred to as "burn-in" and results in a flat-top or "self-reversal" to the line profile. This has already been noticed for the C III 977 line. From data release 4.0, level-2 files are corrected for burn-in for six lines. The effects of burn-in continue to be monitored, particularly for weaker lines for which a correction is not currently available.
 The lines that are being corrected (as of 2023-11) are: N IV 76.5 nm, Ne VIII 77.0 nm, Ne VIII 78.0 nm, C III 97.7 nm, Lyman-beta 102.6 nm, and O VI 103.2 nm.