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Level 1B Product Information and Status
The Level 1B Code generates data products containing calibrated radiances for all 36 MODIS bands and reflectances for the reflective Solar bands (Bands 1 through 19 and 26). The MODIS Terra L1B Version 3.0 and higher software is considered validated.
For detailed information, see the MODIS Level 1B Algorithm Overview, the Level 1B Software System Overview or the Level 1B Calibration Publications List.
Code and Lookup Table Status
Collection 5 has supplanted Collection 4. Collection 4 processing
has halted and the Level 1B products are not available.
Using the PGE02 version 5.0.6.34 LUT in MODAPS production, a Terra Level
1B data processing failure occurred on day 2007-09-17 at 19:35UT when
the linearly-interpolated RVS_correction values for Band 8 fell below
a hard-coded limit. SeaWiFS production encountered the same problem
starting on 2007-09-18 at 09:45UT. A code fix was implemented as version
5.0.38 and data production was resumed during the evening on 2007-09-20.
Click links for Change History document
| Collection
005 |
Forward Processing | Reprocessing | |||
|---|---|---|---|---|---|
| Terra |
Aqua |
Terra |
Aqua |
||
| Current L1B Code | PGE02 Version |
||||
| Began Production |
January 24, 2008 |
January 23, 2008 |
March 8, 2005 |
July 14, 2005 |
|
| First Granule(s) Processed |
January 24, 2008 (Day 2008024) 00:00 UT |
January 23, 2008 (Day 2008023) 00:00 UT |
March 5, 2000 (Day 2000065) 00:00 UT |
July 9, 2002 (Day 2002190) 00:00 UT |
|
| Current L1B LUTs | Version |
||||
| Began Production |
July 08, 2008 |
May 24, 2008 |
May 3, 2006 |
June 07, 2005 |
|
| First Granule(s) Processed |
July 08, 2008 (Day 2008190) 00:00 UT |
May 24, 2008 (Day 2008145) 00:00 UT |
March 5, 2000 (Day 2000065) 00:00 UT |
July 9, 2002 (Day 2002190) 00:00 UT |
|
Collection 5 Terra/Aqua LUT Spreadsheets Version 5.0.40.7/5.0.35.3
Product Explanatory Documents for both MODIS/Terra and MODIS/Aqua
Product File Specifications
Level
1A File Specifications Please note that file specifications are in effect for the specified
release and higher. Instrument PerformanceCAUTION! The sensor operational configuration, detector biases, and lookup table parameters are time-dependent quantities that have been changed to optimize sensor performance. More information on these factors that affect data quality is available by navigating to Aqua MODIS Instrument Performance History or Terra MODIS Instrument Performance History. Following the Terra MODIS recovery on March 28, 2002, MCST noticed minor instrument performance differences that may impact the quality of products that are sensitive to mirror-side differences. Caution is warranted. We welcome your comments to Jack Xiong, Gary Toller, or James Kuyper. |
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Responsible Civil Servant:
Dr. Jack Xiong <Xiaoxiong.Xiong.1@gsfc.nasa.gov>
Email mcst-webm@ssaihq.com to report any problem with the MCST Web Pages.
Last Update: July 9, 2008