Disk read ops and Disk Write ops is missing

This article may help you to get the metrics you're looking for. In short you would leverage CloudWatch metrics to get this info. You can get the disk Read/Write as part of the default CloudWatch metrics. But there are more than you can gather as well leveraging the CloudWatch Agent https://aws.amazon.com/blogs/compute/how-to-monitor-windows-and-linux-servers-and-get-internal-performance-metrics/

Use Cloudwatch metrics (DiskReadOps, DiskWriteOps, VolumeReadOps and VolumeWriteOps) List of available metrics for your instances
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/viewing_metrics_with_cloudwatch.html