May 18, 2000
Earth Observing One
Mission Science Office

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This CD-ROM contains sample Advanced Land Imager(ALI) 
Level0 and Level1 data files for a nominal data collection 
event(DCE). These datafiles are contained in the zip file

	SampleALIData.zip

The ALI Level0 file set consists of 4 HDF files,
one for each of the ALI's Sensor Chip Array. Each 
Level0 hdf file contains 8 hdf scientific datasets.

    Level0 Files:

	1. EO11999303011813.M1Z
	2. EO11999303011813.M2Z
	3. EO11999303011813.M3Z
	4. EO11999303011813.M4Z

    HDF datasets contained in each Level0 file:

	1. Multi-Spectral(MS) bands Pre-image dark data.
	2. Pan band pre-image dark data.
	3. MS bands image data.	
	4. Pan image data.
	5. MS bands internal lamp data.
	6. Pan band internal lamp data.
	7. MS bands post-image dark data.
	8. Pan band post-image dark data.


The radiometrically corrected Level1 files are produced 
by the MIT/LL Calibration Pipeline software. Each Level1 
hdf file contains 6 hdf datasets. The Calibration Pipeline
software (version of Dec. 1999) also generates a set of 
processing log files. Details of the datafiles and the 
Calibration Pipeline can be found in the references listed 
below.

    Level1 Files:

    Datafiles:
	1. EO11999303011813.M1R
	2. EO11999303011813.M2R
	3. EO11999303011813.M3R
	4. EO11999303011813.M4R

    Processing Log files:
	1. EO11999303011813.M1Z.log
	2. EO11999303011813.M2Z.log
	3. EO11999303011813.M3Z.log
	4. EO11999303011813.M4Z.log

    HDF datasets contained in each Level1 file:

	1. Pan band radiometrically corrected data.
	2. Pan band averaged dark offsets.
	3. Pan band radiometric response functions.
	4. Multi-Spectral bands radiometrically corrected data.
	5. Multi-Spectral bands averaged dark offsets.
	6. Multi-Spectral bands radiometric response functions.


Note: The Level0 datasets used here were selected from two
distinct instrument integration events. Hence the instrument
settings, while consistent, are not identical among the
datasets. Additionally, the calibration coefficients used to 
generate the Level1 files here are NOT definitive. Therefore 
these datafiles are intended for procedural and formatting 
purposes only. 


References:

1. Earth Observing -1 Interface Control Document for Radiometric 
	Calibration Processing and Performance Assessment Processing 
	Between Goddard Space Flight Center and Massachusetts 
	Institute of Technology Lincoln Laboratory. EO-1 ICD 055, 
	Rev. B, NASA/GSFC, January 8, 1999.

2.  Radiometric Calibration Pipeline for the EO-1 Advanced
	Land Imager, J. Evans & E. Viggh, Proc. SPIE Vol. 3750,
	Earth Observing Systems IV, William L. Barnes (Ed.), 
	p. 153-161, Sept. 1999.