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Description
The Terra Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Level 1B (AST_L1B) Registered Radiance at the Sensor data product is radiometrically calibrated and geometrically co-registered. Application of intra-telescope and inter-telescope registration corrections for all bands are relative to the reference band for each telescope: Visible and Near Infrared (VNIR) Band 2, Shortwave Infrared (SWIR) Band 6, and Thermal Infrared (TIR) Band 11. The AST_L1B product has a spatial resolution of 15 meters (m) for the VNIR bands, 30 m for the SWIR bands, and 90 m for the TIR bands.
Known Issues
TIR bands: Acquisitions for TIR bands ended on January 16, 2026, at 05:10:45 UTC, when the ASTER TIR instrument was permanently turned off due to power limitations on the Terra spacecraft. More information is available in this NASA Science News Brief.
Data acquisition gaps: On November 28, 2024, one of Terra's power-transmitting shunt units failed. As a result, there was insufficient power to maintain functionality of the ASTER instrument. ASTER resumed acquisitions for the VNIR bands on January 18, 2025, and for the TIR bands on April 15, 2025. Users should note the data gap in ASTER acquisitions from November 28, 2024, through January 16, 2025, for VNIR observations, and a gap from November 28, 2024, through April 15, 2025, for TIR acquisitions.
SWIR bands: ASTER SWIR detectors are no longer functioning as of January 12, 2009, due to anomalously high SWIR detector temperatures.
SWIR anomaly: Users are advised that ASTER SWIR data acquired from April 2008 to January 11, 2009, exhibit anomalous saturation of values and anomalous striping. This effect is also present for some prior acquisition periods. Please refer to the ASTER SWIR User Advisory for more details.
15 Meters x 15 Meters 30 Meters x 30 Meters 90 Meters x 90 Meters
Location
GLOBAL
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2000-03-04 to Present
Data Partner
Land Processes Distributed Active Archive Center (LP DAAC)
,
Ground Data System, Japan Space Systems, National Institute of Advanced Industrial Science and Technology, Ministry of Economy, Trade, and Industry, Japan (JP/METI/AIST/JSS/GDS)
Concept ID
C3306888201-LPCLOUD
Data State
ACTIVE
Number of Files/Granules
4814364
Processing Level
1B
Published
Updated
Science Keywords
REFLECTED INFRARED
,
THERMAL INFRARED
,
VISIBLE IMAGERY
,
Visible Radiance
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Citation Copied
NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team. (2025). ASTER L1B Registered Radiance at the Sensor V004 [Data set]. NASA Land Processes Distributed Active Archive Center. https://doi.org/10.5067/ASTER/AST_L1B.004 Date Accessed: 2026-05-01
NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team. “ASTER L1B Registered Radiance at the Sensor V004.” NASA Land Processes Distributed Active Archive Center, 2025. doi:10.5067/ASTER/AST_L1B.004. Date Accessed: 2026-05-01
NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team. ASTER L1B Registered Radiance at the Sensor V004. NASA Land Processes Distributed Active Archive Center, 2025, doi:10.5067/ASTER/AST_L1B.004. Date Accessed: 2026-05-01
File Naming Convention
AST_L1B_00401242021232347_20250912150246.hdf
The file name begins with the Product Short Name (AST_L1B), followed by the 3-digit Version Number plus the Date and Time of Acquisition designated as MMDDYYYYHHMMSS (00401242021232347), Date and Time of Processing designated as YYYYMMDDHHMMSS (20250912150246), and the Data Format (hdf).
The USGS EROS User Services team is offering an hour-long webinar to share the data, tools, and services available from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument aboard NASA’s Terra satellite.
Mineralogy and Geochemistry of Jasperoid Veins in Neoproterozoic Metavolcanics: Evidence of Silicification, Pyritization and Hematization
Khedr, Mohamed Zaki, Sayed, Mahmoud A., Ali, Shehata, Azer, Mokhles K., Ichiyama, Yuji, Takazawa, Eiichi, Kahal, Ali Y., Abdelrahman, Kamal, Mahdi, Ali M.
Mapping sequences and mineral deposits in poorly exposed lithologies of inaccessible regions in Azad Jammu and Kashmir using SVM with ASTER satellite data
Integrated spectral analysis of ASTER and gamma-ray spectrometric data to delineate alteration minerals for uranium exploration in Gabal Khashm El-Risha area, North Eastern Desert, Egypt
Integration of airborne geophysical and ASTER remotely sensed data for delineation and mapping the potential mineralization zones in Hamash area, South Eastern Desert, Egypt
Aboelkhair, Hatem, Ibraheem, Maged, El-Magd, Islam Abou
Mapping hydrothermal alteration zones using ASTER images in the ArabianNubian Shield: A case study of the northwestern Allaqi District, South Eastern Desert, Egypt
Mohamed El-Desoky, Hatem, Soliman, Nehal, Ahmed Heikal, Mohamed, Moustafa Abdel-Rahman, Ahmed
Multi-sensor datasets-based optimal integration of spectral, textural, and morphological characteristics of rocks for lithological classification using machine learning models
Lithological and alteration mapping using Landsat 8 and ASTER satellite data in the Reguibat Shield (West African Craton), North of MauritaniaImplications for uranium exploration
Ishagh, Mariem Mohameden, Pour, Amin Beiranvand, Benali, Hanafi, Idriss, Abdallahi Mohamedou, Reyoug, SidAhmed Sidi, Muslim, Aidy M., Hossain, Mohammad Shawkat
Gold prospectivity mapping in the Sonakhan Greenstone Belt, Central IndiaA knowledge-driven guide for target delineation in a region of low exploration maturity
Comparison of petrological and geochemical characteristics of three different types of Eocene copper-gold mineralization in eastern Iran
Karimpour, Mohammad Hassan, Malekzadeh Shafaroudi, Azadeh, Mohammadi, Fahimeh, Askari, Ali, Sadeghi, Martiya, Santos, Jose Francisco, Stern, Charles R.
A simulation-based framework for modulating the effects of subjectivity in greenfield Mineral Prospectivity Mapping with geochemical and geological data
Successful spectral remote sensing techniques for mapping apatite mineral of phosphatic rocks at eastern side of Abu Tartur Plateau, Western Desert, Egypt
Synergistic use of ASTER, L-band ALOS PALSAR, and hyperspectral AVIRIS-NG data for exploration of lode type gold deposit - A study in Hutti Maski Schist Belt, India
Using reflectance spectroscopy and Advanced Spaceborne Thermal Emission and Reflection Radiometer data to identify bauxite deposits in vicinity of Az Zabirah, northern Saudi Arabia
Tungsten skarn mineral resource assessment of the Great Basin region of western Nevada and eastern California
Lederer, Graham W., Solano, Federico, Coyan, Joshua A., Denton, Kevin M., Watts, Kathryn E., Mercer, Celestine N., Bickerstaff, Damon P., Granitto, Matthew
Using ASTER images and field work data for geological mapping around Wadi Umm Ashira and Wadi Tilal Al-Qulieb, Northwestern part of Wadi Allaqi, South Eastern Desert, Egypt
Mapping and assessing limestone as a raw material for the cement industry using satellite data: a case study of areas between Riyadh and Al Kharj, Saudi Arabia
Selim, El Sayed, Aboelkhair, Hatem, Aboezz, Eid R.
The table below lists the variables contained within a single granule for this
dataset. Variables often contain observed or derived geophysical measurements
collected from a variety of sources, including remote sensing instruments on
satellite and airborne platforms, field campaigns, in situ measurements, and
model outputs. The terms variable, parameter, scientific data set, layer, and band
have been used across NASA’s Earth science disciplines; however, variable is the
designated nomenclature in NASA’s Common Metadata Repository (CMR).
Variable metadata attributes such as Name, Description, Units, Data Type, Fill
Value, Valid Range, and Scale Factor allow users to efficiently process and analyze
the data. The full range of attributes may not be applicable to all variables.
Additional information on variable attributes is typically available in the data,
user guide, and/or other product documentation.
For questions on a specific variable, please use the Earthdata Forum.
