This site requires javascript to be enabled to fuction correctly


RSS Feed
Knowledgebase : Archive & Data Retrieval
The ALMA calibrator database is accessible at the ALMA Science Portal [1]. It provides a history of flux densities at given frequencies and angular structure information or limits for more than 700 sources. In addition, processed data from calibrato...
If you are the PI of an ALMA proposal that got data, you can delegate access to these data during the proprietary period to anyone with an ALMA account (Co-I's or other ALMA users). To do this, log into the ALMA Science Portal [1] using your ALMA u...
The simplest method is to first use a standard web-browser (e.g. on a laptop), query the archive, select the data to download and then chose the "download script" option from the ALMA Request Handler. This script can then be copied to the machine that ...
It is only possible to download data in raw ASDM tar files or processed data tar file packages. Eventually, ALMA will also provide direct access to images, but this feature will not be available for several months. For Cycle 1 and Cycle 2 data, all...
ALMA calibration data are public from the time the observations are taken, but most calibration data is contained in EBs that also contain proprietary data. You may submit a helpdesk ticket to your ARC to obtain the calibration data if you wish, and we...
Yes. Hover over the "Target list" input field in the Position menu of the ALMA Science Archive [1] and upload your target list from your computer. The list must be an ascii file with one source name or position per line. The RA and Dec coordinate...
Yes, this is possible. Check the "public data only" checkbox in the Options menu and enter '0' into the "Publication count" field in the Project menu. Then hit "Search".
Both raw data and processed data are ingested into the archive as tar files. A more detailed description of the data products can be found in the document ALMA QA2 Data Products that can be found on the Documents page in the Science Portal [1]. R...
Once you have entered query constraints into the Archive query interface at http://almascience.org/aq [1] and hit "Search" you will see the results of your query. In order to download the results table and look at it e.g. in Topcat (http://www.star.bri...
The FITS products delivered to the PIs are not complete. They mostly serve the purpose to show that the requested parameters are reached and do not always cover the full bandwidth, all spectral windows, or all fields. For many scientific use-cases, (re...
ALMA datasets can be very large, and take many hours to download. However, there are a couple of steps a user can take to minimize the wait: 1) Ensure you are on a good internet connection. Many commercial home internet providers will allow you to s...
To query one of the following options can be used: * You can query for a target list directly on the query interface. (Note that in this case the Export Table or Bookmark Result do not work). * You can can write a shell script that goes through t...
The ALMA calibrator database can be directly queried through a web form at http://almascience.org/sc/ [1]. Alternatively, you can query the ALMA calibrator database from the OT in this way: * Open up the OT and create a Science Goal (or use an e...
On the results page of the Archive query interface at http://almascience.org/aq [1] click with the mouse on the "more columns" link in the top left corner. All columns above the red bar will be displayed. Use the mouse to either drag&drop the red bar or a...
ALMA raw data, data products (images or cubes), and auxiliary data (scripts, logs and quality assessment figures) are stored in the archive for each data delivery. This data includes the calibration and flagging tables. Users will need the calibrat...
From time to time one of the ARCs is undergoing maintenance and the Archive Query interface and/or the Request Handler might be temporarily down. For longer outages such maintenance is announced on the front page of the Science Portal of the ARC. As...
We are not accepting user-donated ALMA data products into the ALMA archive unless they are part of Large Programs. We would be very much interested in learning about your motivation and the requirements you have, so please write us a Helpdesk ticket. W...
Yes! In case you get an interrupted download just rerun the downloadscript (or continue in the download manager downloads). The software will detect that part of the file is already downloaded and will only fetch the remaining part of the files. Thi...
In general, the release of raw, uncalibrated data to a PI is _strongly discouraged_ and only under specific conditions will the raw data of an observing program be delivered before quality assurance is completed by ALMA staff. These policies are descri...
ALMA Observations are subject to "best efforts", meaning that the observatory will attempt to meet the sensitivity and resolution stated by Primary Investigators (PIs) in their Science Goals. Each project component ("Schedule Block" or SB) is scheduled...
What you see in your data package when you download it from the archive will depend on whether the imaging and calibration have been performed by the pipeline, or one or both via a manual process. Except for datasets that were put through the imaging p...
QA0 (Quality-Assurance stage 0) is a near-real-time verification of data quality performed at the time of data taking. It reflects the quality of the calibrations included in the Scheduling Block (SB) as well as other basic parameters of the observatio...
A table of ALMA Science Verification (SV) targets and observing parameters is provided at the "Data -> Science Verification" link from the ALMA Science Portal (http://almascience.org). A description of the SV process and policies is given at http://alm...
Any user can get a listing of the projects or sources that were observed by ALMA on any given date with a simple query to the ALMA Data Archive, accessed from the Science Portal by following the left menu link "Data → Archive", and clicking the "Archiv...
1) if you are using the ALMA download manager, and Java 7 Update 51 or later, you may see the error "Missing permissions manifest attribute in main jar". See https://help.almascience.org/index.php?/Knowledgebase/Article/View/262/0/ot-will-not-start-due...
ALMA science verification data usually have non-standard metadata that does not allow their display and download through the archive tool. Instead, they have been made available directly from the ALMA Science Portal at http://almascience.org/alma-data/...