Automated Street Lighting System Using IoT

Using Arduino Programming Questions
1

I am working on Automated Street Lighting System Using IoT project and using ThingSpeak for analytics. I have set Light status =100 when led is on and Light status=10 when led is off and its graph is being displayed on ThingSpeak. I want to detect the faulty bulb in my project such that when led(bulb) is disconnected from the breadboard,its Light_status should drop to 10 from 100.

Below is the code:

sensorvalue = analogRead(sensorPin);

Serial.println(sensorvalue);
if (sensorvalue < threshold) //threshold=90
{
Serial.println("LED light on");
digitalWrite(led1,HIGH); //switch on the light
int ledstate = digitalRead(led1);
if(ledstate!=HIGH)
** {**
** Light_status=10;**
** Serial.println("Fault");**
** }**
else
{
Light_status=100;
}
else
{
digitalWrite(led1,LOW); //switch off the light
Light_status=10;
}

Above code is working fine when led is connected but when I am disconnecting the led, there is no effect in the graph means Light_status from 100 is not getting dropped to 10.

It seems like that either the code above in bold letters is not executing or I am doing something wrong.

2 
digitalRead(led1);

Will only tell you if the pin is set to HIGH or LOW. It will not tell you if anything is connected to it.
I guess there is a resistor, say 330 ohms, in series with the led. You could connect the junction between the resistor and the led to an analog pin and read the value to see if the LED is actually working when on (or at least consuming power).