The Details Pane: Getting More Information on a Search Results Row

After you have searched the archive and explored the tabs in your search results, you might be interested in understanding the additional information that appears on the right side of your screen when a row in the table (for any tab) is highlighted. You can click and drag the divider between the window panes to resize them, or in several cases, you can click on the expand icon () to expand that pane to take up the whole browser window. To collapse it back, click on "Close" in the upper left.

The contents of the Details pane change according to which tab you have in the foreground, and which row you have selected.

Depending on which tab you have in the foreground in the Details pane when you click on a different tab in the Results pane, or which tab you have already examined, you may end up with an "extra" tab in the Details pane, e.g., one more than is described here. This is the SHA trying to be helpful, preserving a vestige of what you were doing prior to changing tabs.

Contents of page/chapter:
+Details Tab
+Data Tab
+AOR Depth of Coverage Tab
+AOR Footprint Tab
+Data Coverage Tab

 

Details Tab

From any results tab, click on any row (note: no need to select the checkbox on the far left of the row). The row becomes highlighted in green. The details pane on the right side of the window changes accordingly. If it's not selected already, select the "Details" tab. The Details tab contains information about whatever line you have selected in the results pane.

For AORs, it starts with a section that contains the original program title, program name, primary science category, principal investigator, and abstract. You can use this information to understand what the original observer was trying to achieve with these observations -- e.g. if they were attempting to observe bright things, it may be unlikely that you will be able to use those observations alone to study faint things.

The rest of the Details tab contains additional technical information about the observation, such as the AORKEY (a large integer that uniquely identifies this observation in the SHA) and the observing mode parameters that defined this observation (such as frame time and dither pattern). More information about these parameters and their available values for any given instrument or mode can be found at the Spitzer Heritage Documentation website at IRSA.

For Level 1 or Level 2 data, the Details tab contains technical information about the specific data frame or data product you have selected in the results pane. You can use this information to help decide if you are interested in finding out more about this frame or product, or deciding to download it. Most of the values that appear there should be self-explanatory from the name or from the tool tips that appear when you let your mouse hover over the name. Much of the information that appears there is also information that can be found in the FITS header of the corresponding FITS file; for a full view of the FITS header, see the Data tab, specifically some of the visualization options that appear in that tab.

For IRS Enhanced Products, the Details tab contains technical information about the specific data product selected.

For Contributed Enhanced Products, you need to click on one of the projects first, and then you are taken to a list of all the returned products from that project. From there, you can select a row, and get a Details tab with information about that product.

Data Tab

From ANY results tab, click on any row (note: no need to select the checkbox on the far left of the row). The row becomes highlighted in green. The details pane on the right side of the window changes accordingly. Select the "Data" tab.

NOTE: this tab shows you actual data.

For AORs, the Data tab will either not appear, or retain its values from whatever you were last looking at.

For Level 1 or Level 2 images, the Data tab shows you the actual data frame corresponding to the file you have selected. You can interact with the FITS image using the toolbox, which appears near the top of your window when you place your mouse over an image and hesitate. Further discussion of these can be found in the Visualization section.

For Level 1, Level 2, or IRS enhanced spectra, the Data tab shows you the actual spectrum pulled from the file you have selected. In the case of IRS Level 1 or Level 2 data, both images and spectra are viable products; the "File Type" column in the AOR pane tells you whether the file is an image or a table, and thus whether to expect an image or a spectrum to appear when selecting the Data tab. All of the IRS enhanced products are spectra, and so the spectrum viewer will always appear.

Discussion of all of the options for the spectrum viewer can be found in the Visualization section.

For Contributed Enhanced Products, you need to click on one of the projects first, and then you are taken to a list of all the returned products from that project. From there, you can select a row, and get a Details pane that includes a Data tab, from which you can investigate that product.

You can click and drag the divider between the window panes to resize them, or you can click on the expand icon () to expand that pane to take up the whole browser window. To collapse it back, click on "Close" in the upper left.

(More information on visualization options.)

AOR DoC Tab

From the AOR tab, click on any row (note: no need to select the checkbox on the far left of the row). The row becomes highlighted in green. The details pane on the right side of the window changes accordingly. Select the "AOR DoC" tab.

The AOR DoC tab shows you the depth of coverage (DoC) of the selected observations, e.g., how many individual frames were observed on each patch of sky. For any given AOR, the exposure time of an individual frame is [largely] the same for a given channel; the DoC tells you the number of frames, so the DoC is directly related to the total integration time per patch of sky. To find what that exposure time was, examine the information in the Details tab.

IMPORTANT NOTE: The DoC is counting frames that were actually observed. This may sound simple, but it can be complicated. If your observation has frames of a variety of exposure times (e.g., certain long IRAC integrations sometimes have a short initial exposure for reasons related to instrumental effects), you will see an "additional" frame in the DoC. Since the DoC calculation works from the actual pipeline-processed data, it may have "additional" frames compared to a Spot visualization, since Spot was estimating what would be observed, as opposed to working from what was actually observed. If you have questions, please consult the corresponding Instrument Handbook, or contact us.

The top of the AOR DoC window shows the zoom factor, and the wavelength to which it refers. You can scroll between bandpasses if more than one were obtained in the observation you are inspecting.

You can interact with this DoC (which is a FITS file) via the image toolbox, which appears near the top of the window when you place your mouse over the image and hesitate. Further discussion of these can be found in the visualization section.

This tab is "sticky", meaning that once you look at it once, it sticks around. You have to be somewhat careful - it will automatically update if you, say, pick another row in the AOR tab, but if you are in one of the other tabs, this tab will not go away, and not update. Note that it doesn't have any physical meaning in the enhanced product tabs.

(More information on visualization options.)

AOR Footprint Tab

From the AOR tab, click on any row (note: no need to select the checkbox on the far left of the row). The row becomes highlighted in green. The details pane on the right side of the window changes accordingly. Select the "AOR Footprint" tab.

The AOR Footprint tab is meant to show you the specific region of sky that was covered by the selected single AOR. Note that this is the entire observation, all bandpasses. The background image that comes up by default is automatically selected (you can change it), and the outline of the observation (its "footprint") is drawn on the image.

You can interact with the AOR footprint image (which is a FITS file with an overlaid footprint) via the image toolbox, which appears near the top of the window when you place your mouse over the image and hesitate. Further discussion of these can be found in the visualization section.

The top of the AOR Footprint window shows the AORKEY corresponding to the visualized AOR, the source of the background image used, and the zoom factor.

(More information on visualization options.)

Data Coverage Tab

From just about any tab other than the AOR tab, click on any row (note: no need to select the checkbox on the far left of the row). The row becomes highlighted in green. The details pane on the right side of the window changes accordingly. Select the "Data Coverage" tab.

NOTE: this tab shows you portions of the sky covered by the ALL the files that are displayed in a given page. This is one of the most common confusions about this tab. Note that it is not all the search results (if you have more than one page), and it is not just the single row you have selected.

The Data Coverage tab shows you the portion of sky that is actually covered by the screenful of files you have displayed. This is different from the AOR Footprint tab in that the AOR Footprint tab shows you the portion of sky observed by just the entire single AOR that you have highlighted.

The background image that comes up by default is automatically selected (you can change it), and the outlines of all the observations in the window are drawn on the image. The specific one corresponding to the row you have selected is highlighted in a different color. (You have some control over which colors are available for these overlays - see the Visualization section.)

You can use this feature, for example, to determine the portion of a large map that you wish to download and further analyze, or the specific frame that hits a bright star, etc.

Note that the Data Coverage will just show the pointings corresponding to the files listed in your current window! If you have 72 files returned but are only looking at 50 at a time, then only the first 50 will be visualized. To see the full AOR coverage, use the AOR Footprint tab, or increase your page size (see text here), and/or impose filters.

For Contributed Enhanced Products, you need to click on one of the projects first, and then you are taken to a list of all the returned products from that project. From there, you can select a row, and get a Details pane that includes a Data Coverage tab, from which you can investigate the sky coverage of that product.

You can click and drag the divider between the window panes to resize them, or you can click on the expand icon () to expand that pane to take up the whole browser window. To collapse it back, click on "Close" in the upper left.

Again, the images that are shown are real FITS files, and you can interact with them using the image toolbox. Further discussion of these can be found in the visualization section.