Last modified on February 12, 2018

Note: This topic describes the charts accessible in the compare mode. For the Charting dashboard accessible via the top menu, see Charting Dashboard.

AlertSite provides an easy-to-use charting interface to visualize your monitoring data. Response time, availability, and Apdex information collected by your AlertSite monitors can be presented in a customizable chart. Charts can display multiple series of data for easy comparison. You can customize the level of granularity – for example, display raw data or hourly averages.

Chart that compares the Base Page Response Time and Time to First Byte metrics of two monitors

Click the image to enlarge it.

Creating a Chart

For a single monitor

  • On the Dashboard, click the monitor tile and then click CompareCompare on the tile toolbar. Switch to the Charting tab.

– or –

For all monitors in a group

  • On the Dashboard, click the group tile and then click CompareCompare on the tile toolbar.

For multiple monitors and groups

  • On the Dashboard, click CompareCompare on the main toolbar.

  • In the list on the left, select the monitors and groups to include in the chart.

    Note: Selecting a group will replace the previous selection with the monitors from that group. To combine a group with other monitors, select the group first.
  • Switch to the Charting tab.

Changing the selected monitors

You can add and remove monitors from the chart via the monitor list on the left.

Click next to Selections to display only the selected monitors and to switch back to the monitor selection mode.

Selecting monitors to be displayed


  • By default, the chart includes only successful tests (with status 0). To view all test results, use a Scatter chart with Group By: Raw Data.

  • Saving and loading chart configurations is not supported for now. You can take screenshots to save the chart on your computer.

Basic Options

The following options can be changed using the toolbar above the chart.

Group By

This option lets you switch between raw data and grouped (summary) data.

Raw data means each data point represents a single monitor run. When used together with Chart: Scatter and Color By: Status, raw data helps you get a quick overview of all monitor runs over the selected period.

Chart with raw data

Click the image to enlarge it.

With large data sets, you may want a quick aggregated view of the data. That is what the grouping options are for. When grouping is used, the X-axis is split into intervals based on the selected unit of measure, and the data points on the chart are the average values for each interval. Data can be aggregated by various classifications, such as Time, Week, Locations, Monitors, and so on.

For example, a chart grouped by Day and Hour shows hourly averages:

Chart with data grouped by hour

Click the image to enlarge it.

Similarly, a chart grouped by location shows the average values for each location:

Chart with data grouped by location

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Grouped charts have drilldown capabilities – you can click a data point or a bar to view the underlying raw data.

Series By

A series corresponds to an individual line on a line chart, or same-colored bars on a bar chart. Each series represents a distinct data set, such as the values of a specific metric of a monitor, or the metric values measured from a specific location. Series can be assigned a unique color or data point shape to make the chart easier to understand. The series legend appears to the right of the chart.

Possible series depend on other chart configuration. You can choose between:

  • Metric
  • Monitor
  • Location
  • Monitor and Location
  • Monitor and Step
  • Monitor, Step and Location

For example, using Series By: Location, you can see the response time by location:

Series by location

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Using Series By: Metric you can see the response time broken down into individual network timings:

Series by metric

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The chart type – Line (default), Bar, or Scatter.

Time Type, Time Period (relative) or Time Range (absolute)

The time range for the chart. You can select a relative time range, such as Last 24 Hours or This Week, or an exact date range within your data retention period (which is 3 months by default).


When using a relative time period such as Last 1 Hour, click Refresh to update the chart with the latest monitor data. The chart configuration (type, series, and so on) will be preserved.

Advanced Options

The  Advanced Options button displays all chart options on one screen, so you can quickly make multiple changes. A preview of the configured chart appears on the right.

To return to the chart, click Apply and close or Close. The difference is that Apply and close redraws the chart immediately, whereas Close saves the configuration but does not redraw the chart so you will need to trigger the update manually.

In addition to the options described above, additional options include the following:


Select the locations whose data you wish to include in the chart. Select none to use data of all locations.

Status Types

Scatter charts can be filtered by the test status:

  • Show All – all tests regardless of the status.

  • Show Successes Only – only tests that were successful (status 0, regardless of the full page status).

  • Show Errors Only – only tests that failed (status other than 0).


If the chart includes multi-step monitors, you can choose to only show the data for specific steps. This option is available for charts with Group By: Raw Data.

To select the steps, expand a monitor and click the desired steps in the list. The selected steps are indicated with a blue color.

Select steps

Legend Options

Line and scatter charts use a combination of color and shape to indicate different series of values. You can control how the series are displayed by using the options in the legend to the right of the chart. Available options depend on the chart configuration.

Color By

Chart colors can be based on:

  • Metric
  • Monitor
  • Location
  • Monitor and Location
  • Availability
  • Apdex (Excellent, Good, Fair, Poor, Unacceptable)
  • Status – Available only for charts with Group By: Raw Data and Chart Type: Scatter. Statuses are defined as follows:

    • Success – Status 0. Test results with warnings and fullpage warnings appear green unless the Show Warnings and Show Full Page Warnings options are selected.

    • Error – Statuses other than 0.

    • Full Page Warning – Tests with fullpage status 72xx. This status is used for web page tests where the base page was loaded successfully but there were problems loading some of the page assets (images, scripts, CSS, and so on).

    • Warning – Tests where the first attempt failed but the second attempt was successful.

    Warnings and fullpage warnings are only displayed if the corresponding status options are selected.

Note: Some options are only available in certain chart configurations.

Shape By

Data points on line and scatter charts can have different shapes to distinguish between different series of data. Shapes can be based on:

  • Metric (default)
  • Monitor
  • Location
  • Monitor and Location


Select one or more metrics to show on the chart. Available metrics include response time components and, for some chart types, Apdex and availability (percentage of successful tests).

Interacting With Charts

Viewing Details for a Data Point

Hover over the chart points to see a tooltip with the status at that point, including:

  • Monitor name
  • Location
  • Test date, time, and status (0 – success)
  • Response time with breakdown into where the time was spent (see Web Page Load Time for the description of the metrics)
  • Full page response time (only for website and DéjàClick monitors with the fullpage monitoring enabled)
  • Website availability (only for grouped charts)
  • HTTP status code

The exact displayed information depends on the chart type and configuration.

When using grouped charts, click a summary data point or a bar to view the raw data for the corresponding interval. Raw data appears as a scatter plot, where each data point represents a monitor run. Click Go Back to return to the main chart.

Chart drilldown

Click the image to enlarge it.

In raw scatter plots, click a data point for a tooltip with the View Run and View Detail Report links. View Run opens the run results on the Monitor Runs screen. View Detail Report displays the run data in a tabular, printable format as the Detail report.

Scatter chart tooltip with the View Detail Report and View Run links

Zooming the Chart

Drag on the area you want to zoom into. To return to the original chart, click Reset zoom.

Zooming the chart

Removing Chart Filters

Click on the list of the applied filters to remove that filter. To remove all filters, click Clear All on the right.

Removing chart filters

Click the image to enlarge it.

Exporting to CSV

You can export the current chart’s data to CSV. To do this, click Export CSV in the top right corner of the chart. The CSV data includes:

  • monitor name and type,
  • location (for raw data charts or grouped by locations),
  • date and time of monitor run (for raw data charts),
  • response time and its breakdown into network timings (DNS time, connect time, redirect time, first byte time, content).

See Also

AlertSite Dashboard
Comparing Monitors, Steps, and Locations
AlertSite Dashboards