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The ALMA calibrator database is accessible at the ALMA Science Portal
[http://almascience.org/sc/]. It provides a history of flux densities
at given frequencies and angular structure information or limits for
more than 3000 sources.
In addition, process...
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
[http://almascience.org/]...
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 doe...
Yes! For data from Cycle 5 onwards data-files can be downloaded
individually from the Request Handler. Search for your data on
https://almascience.org/aq, [https://almascience.org/aq,] select the
data you are interested in, click on 'Submit download requ...
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 wi...
Yes.
Click on the "Target list" input field in the Position menu of the
ALMA Science Archive [http://almascience.org/aq] 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 a...
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".
For Cycles 5 and onwards, raw data and processed data are ingested
into the archive as individual files. Upon retrieval - optionally -
they are packaged together into tarfiles for better downloads. Data
from earlier cycles are directly stored as tar files...
Once you have entered query constraints into the Archive query
interface at http://almascience.org/aq [http://almascience.org/aq] 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...
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:
* Ensure you are on a good internet connection. Many commercial home
internet providers will allow you to star...
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 the ...
The ALMA calibrator database can be directly queried through a web
form at http://almascience.org/sc/ [http://almascience.org/sc/].
Alternatively, you can query the ALMA calibrator database from the OT
in this way:
* Open up the OT and create a Scie...
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 (asdm), 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.
The FITS products delivere...
The ALMA TP data is generally reduced using the TP data reduction
pipeline which performs calibration and imaging; very few are reduced
manually using standard scripts. You can determine whether your data
was reduced by Pipeline by looking for a file "PPR...
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. We a...
Restoring the calibrated measurement set
-------------------------------------------------
Calibration is the first step of processing interferometric data. Many
users will want to recreate the calibrated measurement set and perform
the second step (imag...
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...
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 pipe...
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 observations....
Cycle 5 data deliveries currently may not contain an informative
README. Unfortunately, the tools that package and ingest data into the
archive are not yet placing a QA2 report in the qa directory.
As PI or Co-I of a project, to find the QA0 and QA2 repo...
Science Verification data can now be searched and downlaoded directly
from the ALMA Science Archive interface at
https://almascience.org/asa.
In addition, a table of ALMA Science Verification (SV) targets and
observing parameters is provided at the "Data...
The fully-calibrated MS which includes only the science target data
has been provided as an additional "Added Value" service to North
American PIs. However, if you would rather start from scratch using
the archive products to process your data, detailed i...
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 "Archive Q...
For Mac OS and linux users the recommended internet browser to use for
full functionality of the pipeline weblog viewing is FIREFOX.
Other browsers such as the default Safari, or the often used Chrome
_do not_ provide full support for the weblog interfac...
Since Cycle 5, the PI has had the ability to input a range of
resolutions in the OT (a single value is considered a very tiny
range). Based on this information, the OT writes a range of acceptable
angular resolution into the Scheduling Block as follows:
...
We do recommend the use of the download script for data-download from
ALMA. Nevertheless sometimes problems with the data download can
occur. Typically an error message "Error code 8" is obtained which
translates to "Internal Server Error" and indicates a...
As of 2018 ALMA Science Verification data can be searched for and
downloaded from the ALMA Science Archive interface at
https://almascience.org/aq [https://almascience.org/aq]. They are also
available from the ALMA Science Portal at
http://almascience.org...
The North American ALMA archive query interface
(http://almascience.nrao.edu/aq/) has security settings which prevent
a user from uploading a list of sources or positions to query.
However, the European (http://almascience.eso.org/aq/) and East Asian
(htt...
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