added metrics content (#152)

Author: CandiceChislett

docs/Data-insights/Features/explore-metrics.md

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+# Overview
+
+FusionReactor’s **Metrics Drilldown**  offers a seamless, query-free way to explore Prometheus-compatible metrics. With just a few clicks, you can uncover related metrics and insights - no need to write a single PromQL query.
+
+![!Screenshot](../../Data-insights/Features/images/metrics-main.png)
+
+
+## Key features
+
+- Segment metrics by labels to quickly spot anomalies and pinpoint issues.
+
+- Auto-visualize metric types (e.g., gauges vs. counters) with no manual configuration.
+
+- Discover related metrics to broaden context and deepen analysis.
+
+- Pivot seamlessly to related telemetry, including logs, for end-to-end visibility.
+
+## Getting started
+
+At the top center of the screen, you'll see a welcome panel:
+
+![!Screenshot](../../Data-insights/Features/images/metrics1.png)
+
+
+* Click the **Let’s start!** button to open the **Explore > Metrics** interface.
+* A dynamic grid of metric panels is displayed, each representing a specific Prometheus metric (e.g., apiserver_client_certificate_expiration_seconds_count, apiserver_audit_event_total, apiserver_delegated_authz_request_duration_seconds).
+    ![!Screenshot](../../Data-insights/Features/images/metric-graphs.png)
+* Below the launch panel, you’ll see a list of your **recently run metric queries** for quick re-access. 
+
+### Search & filter metrics
+
+Use search and filters to quickly narrow down the metrics you want to investigate - by system, service, or time frame. This helps you focus on what matters most.
+
+![!Screenshot](../../Data-insights/Features/images/metric-filter.png)
+
+To filter:
+
+* Use the Filter by label values dropdown to select specific services or tags.
+
+* Or type in the Search metrics box (e.g., type cpu), then press **Enter**.
+
+Matching metrics will appear. From here, you can dive deeper into your analysis.
+
+
+###  Investigate the data
+
+Once you've filtered your metrics, it’s time to analyze the data for patterns or unusual behavior. Understanding your system’s normal (baseline) performance makes it easier to spot issues.
+
+To start:
+
+1. Review the metric panels and look for ones with noticeable changes.
+
+    * Metrics with little variation (e.g., JVM Uptime) are typically less insightful.
+
+    * Focus on dynamic and performance-critical metrics (e.g., CPU Usage, Heap Memory Used, Active JDBC Connections, or Request Throughput) to uncover system trends and potential issues.hat show clear trends.
+
+2. Click **Select** on a metric to view it in more detail.
+    
+3. Adjust the time range using the time picker in the top right if needed.
+
+4. Use the **Breakdown** and **Related metrics** tabs:
+
+     * **Breakdown:** Visualizes each label-value pair for the selected metric. You can drill down further or add filters directly.
+     * **Related metrics:** Lists similar metrics based on keywords. You can continue your analysis from here.
+
+    ![!Screenshot](../../Data-insights/Features/images/select.png)
+
+### Open a metric in Explore
+
+Explore lets you interact with your data in real time. You can build, test, and refine queries without needing to create a dashboard. If your data source supports it, you’ll see results in both graph and table views—perfect for quick and detailed analysis.
+
+To drill deeper into a specific metric using Explore:
+
+1. Click **Select** on the metric panel you want to investigate in more detail.
+
+2. Once the panel expands, click the explore icon in the bottom-right corner of the graph.
+
+    
+    ![!Screenshot](../../Data-insights/Features/images/explore-icon.png)
+
+3. This opens the metric in **Explore** view, where you’ll see the full query.
+
+4. From here, you can modify the query, change the time range, and switch between graph and table views to further analyze the data.
+
+    ![!Screenshot](../../Data-insights/Features/images/explore-metrics.png) 
+
+Explore is great for experimenting with queries and uncovering deeper insights—without needing to build a full dashboard.
+
+### Add metrics visualization to a dashboard
+
+1. At the top of the **Explore** page, click **Add to dashboard**.
+
+2. Choose one of the following:
+
+    * New dashboard – to create a new one
+
+    * Existing dashboard – and pick one from the list
+
+3. Click **Open dashboard** to view it.
+
+4. Click **Save dashboard** in the top-right corner.
+
+5. Give your dashboard a name and description, choose a folder (if needed), and click **Save**.
+
+    ![!Screenshot](../../Data-insights/Features/images/save-dashboard.png)