Powershell Script to retrieve Instance Details under AWS Account - AWS Cloud

<#  
.SYNOPSIS  
Script to retrieve Instance Details under AWS Account

This script will also gather last 24hrs Average CPU Value using the function getStats

.FILE NAME
Instance.ps1
#>

clear

Set-ExecutionPolicy Unrestricted
Set-DefaultAWSRegion -Region {Specify the region}
Set-AWSCredentials –AccessKey {Specify the Access Key} –SecretKey {Specify the Secret Key}
Import-Module 'C:\Program Files (x86)\AWS Tools\PowerShell\AWSPowerShell\AWSPowerShell.psd1'; Initialize-AWSDefaults

$scriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path

try
{
    $Environment = "PROD"
            
    $Insts = ((Get-EC2Instance -Region {Specify the region}).RunningInstance | Where-Object -FilterScript {
                                    $_.Tags | Where-Object {
                                        ($_.Key -eq "Environment" -and $_.Value -eq $Environment )
                                    }
                                })
           
    $Instances = $Insts | Where-Object {$_.State.Name.Value -eq "Running"}
    
    $Ins = @{Expression={$_.InstanceId};Label="Instance ID"}, `
    @{Expression={$_.Tags | ? { $_.key -eq "Name" } | select -expand Value};Label="Instance Name"},
    @{Expression={$_.PrivateIpAddress};Label="Private IP"},
    @{Expression={$_.Tags | ? { $_.key -eq "Environment" } | select -expand Value};Label="Environment"},
    @{Expression={$_.Architecture};Label="Architecture"},
    @{Expression={$_.Tags | ? { $_.key -eq "Component" } | select -expand Value};Label="Component"},
    @{Expression={$_.Platform};Label="Platform"},
    @{Expression={(Get-EC2InstanceStatus -InstanceId $_.InstanceId).AvailabilityZone};Label="AvailZone"},
    @{Expression={getStats($_.InstanceId)};Label="Avg Cpu (last 24hrs)"}
        
    $Instances | Format-Table -AutoSize $Ins
}

catch 
{
$originalException = $_.Exception 
try
{
"Error: " + $originalException.Message
}
catch
{ 
"Original Error: " + $originalException.Message 
"Logging Error:" + $_.Exception.Message
}

    Exit 1
}

Function getStats($InstID)
{

    $Stats = Get-CWMetricStatistics -MetricName CPUUtilization -Dimension @{Name = "InstanceId"; Value = $InstID} -StartTime (Get-Date).AddDays(-1) -EndTime (Get-Date) -Namespace "AWS/EC2" -Period 12000 -Statistic Average | Select-Object -ExpandProperty DataPoints
    $aveCpu = $Stats | sort TimeStamp | select -ExpandProperty Average | measure -Average | select -ExpandProperty Average
    
    return $aveCpu
}