ASTROSAT CZTI

Data Quality Report

Orbit 20190228_A05_075T08_9000002744_level2

Creation date: 2019-03-05T13:00:03.816824
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_075T08_9000002744cztM0_level2_bc.evt modeM0/AS1A05_075T08_9000002744cztM0_level2_quad_clean.evt
Size (bytes)1,711,656,000661,766,400
Size1.6 GB 631.1 MB
Events in quadrant A14,683,5124,095,728
Events in quadrant B11,764,8824,307,883
Events in quadrant C9,975,4414,166,915
Events in quadrant D12,004,9484,045,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01208180
B01090360
C01042160
D01094990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010160
B010140
C010120
D010180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4988422804.570604%
B4995911242.249845%
C499639781.957449%
D499578581.717477%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 57627 50223 96 96 0.17% 0.19%
B 57627 50281 13 13 0.02% 0.03%
C 57627 50277 0 0 0.00% 0.00%
D 57627 50287 34 34 0.06% 0.07%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 4270999 7574.27 2582 2529 563.5
A 15 174 206484 361.91 2582 2529 563.5
A 15 192 124855 217.06 2582 2529 563.5
B 10 245 1094318 2154.62 2678 2609 506.7
B 7 220 142261 275.62 2678 2609 506.7
B 0 244 51215 95.93 2678 2609 506.7
C 3 233 45127 71.32 2564 2558 596.8
C 7 247 22434 33.3 2564 2558 596.8
C 9 54 21567 31.85 2564 2558 596.8
D 7 238 764394 1274.5 2600 2506 597.8
D 7 38 399764 664.54 2600 2506 597.8
D 1 52 385670 640.96 2600 2506 597.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter