ASTROSAT CZTI

Data Quality Report

Orbit 30195

Creation date: 2024-06-27T20:12:05.682484
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_071T09_9000004344_30195cztM0_level2.evt modeM0/AS1A10_071T09_9000004344_30195cztM0_level2_quad_clean.evt
Size (bytes)621,861,12089,487,360
Size593.1 MB 85.3 MB
Events in quadrant A3,328,877587,901
Events in quadrant B5,061,083604,214
Events in quadrant C5,987,444542,101
Events in quadrant D4,035,657541,235

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134772
B0190292
C0222452
D0158862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6219440.707509%
B6218891.431328%
C62183064.921197%
D62181352.171116%

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 7569 6220 0 0 0.00% 0.00%
B 7568 6219 0 0 0.00% 0.00%
C 7568 6219 25 25 0.33% 0.40%
D 7568 6219 103 103 1.36% 1.66%

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 8 192 23908 137.48 849 838 167.8
A 0 13 17292 98.06 849 838 167.8
A 13 254 11431 63.13 849 838 167.8
B 6 159 1736566 10976.01 849 830 158.1
B 12 111 18966 114.68 849 830 158.1
B 11 111 17364 104.55 849 830 158.1
C 3 233 2688480 14581.02 800 810 184.3
C 14 238 135691 731.75 800 810 184.3
C 15 208 21810 113.93 800 810 184.3
D 13 104 343297 1778.69 799 781 192.6
D 7 223 286515 1483.82 799 781 192.6
D 8 195 200484 1037.06 799 781 192.6

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