I did some googling.
Then First Rajdhani
Distance: 1,445 km from Howrah to New Delhi; Time: 17 hrs, 20 min
Stops: Three technical stops at Gomoh, Mughalsarai, Kanpur. No passenger pick-ups or drops.
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Coaches: 9, ICF , Perambur—two power cars, 5 AC chair cars, 1 AC dining car, I AC first class coach Fully airconditioned Ran on diesel engine
Maximum Speed: 120 kmph; Fare: Rs 90 for AC chaircar, Rs 280 for AC first class, including food
Menu: Morning tea and biscuits, breakfast with choice of eggs, seasonal fruits, three-course lunches and dinners, choice of European/Indian cuisine
Now
Frequency: Biweekly
Time: 17 hrs, 10 min ( 16 hrs, 55 min on return leg)
Stops: Dhanbad, Gaya, Mughalsarai, Allahabad, Kanpur (Patna instead of Gaya on Sundays)
Coaches: 18, new ones, manufactured under licence from LHB, Germany, at Railway Coach Factory, Kapurthala: 2 AC first class, 5 AC two tier, 7 AC three tier, 2 pantry cars and 2 power cars hauled by electric locomotives
Maximum Speed: 130 kmph
Frequency: Daily, plus one more daily Rajdhani from Sealdah, giving Calcutta two Rajdhanis
Fare: AC first class Rs 3,365, AC 2-tier Rs 2,010, and AC 3-tier 1,520 (chair car phased out)
Menu: Even more sumptuous, with juices, sandwiches, barfis and sandesh
Extra Amenities: Laptop and mobile charging facilities; fresh linen sealed in plastic bags; features commercial ads
Low: Derailed near Gaya in 2002, killing 108 people
High: Got ISO 2001 certificate for overall train management
Source: Eastern Railways
Here is the link:click here

On a poignant note about Rajdhanis, I quote from the linked article,
"Overwhelmingly, the question asked, is: why, four decades on, are we still locked into 17-hour journeys and maximum speed of 130 or 140 km? As some point out, in the 40 years that the Howrah Rajdhani increased its speed from 120 to 130 kmph, China's rails went from nowhere to trains running at 300 kmph. Asks railway buff, Mohan Bhuyan: "Couldn't journey time at least have come down by one hour for every decade?" For the men who brought the Rajdhani into existence, too, the anniversary is bitter-sweet. "There has been a virtual freeze on the development of indigenous technology," says Banerji. "One Rajdhani has been replicated 200 times."...
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:-( :-(