Data Preparation
When Chandra data goes through Standard Data Processing (SDP), the most recently available calibration is applied to it. Since this calibration is continuously being improved, one should check whether there are newer files available. Similarly, some science decisions are made during SDP; every user has the option to reprocess the data with different parameters.
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See the current
Calibration Status Report
Analysis Guides:
General:
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Setting the Observation-specific Bad Pixel Files
Uses: the acis_set_ardlib script - Filtering Data (S-Lang or Python)
- Filtering Lightcurves (S-Lang or Python)
Uses: the lightcurves.sl S-Lang script; the lightcurves.py script; the deflare script
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Setting the Observation-specific Bad Pixel Files
ACIS:
- Check the ACIS Data Caveats
- Why topic: -110 C Observations
- Why topic: Continuous Clocking Mode Data
Removing Cosmic-Ray Afterglows:
- Why topic: Cosmic-Ray Afterglows
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Remove the acis_detect_afterglow Correction
![[Updated]](../imgs/updated.gif)
(1 Jul 2010)
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New ACIS Bad Pixel File: Identify ACIS Hot Pixels and Cosmic Ray Afterglows
(1 Jul 2010)
- Customizing an ACIS Bad Pixel File
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Reprocessing Data to Create a New Level=2 Event File
(27 Sep 2010)
- The ACIS "Blank-Sky" Background Files (S-Lang or Python)
Uses: the acis_bkgrnd_lookup script; the lightcurves.sl S-Lang script; the lightcurves.py script; the deflare script
(28 Sep 2010)
- Remove the ACIS Readout Streak
HRC:
- New Observation-Specific HRC Bad Pixel File
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The HRC-I Background Event Files
![[New]](../imgs/new.gif)
(10 Jun 2010)
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The HRC-I Background Spectra Files
(10 Jun 2010)
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Reprocessing Data to Create a New Level=2 Event File
(27 Sep 2010)
- Computing Average HRC Dead Time Corrections (S-Lang or Python)
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