ASTROSAT CZTI

Data Quality Report

Orbit 39199

Creation date: 2024-06-27T22:01:41.042363
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/AS1A12_054T02_9000005444_39199cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39199cztM0_level2_quad_clean.evt
Size (bytes)815,158,080144,069,120
Size777.4 MB 137.4 MB
Events in quadrant A4,662,4621,094,409
Events in quadrant B4,177,7581,103,901
Events in quadrant C4,279,5021,025,790
Events in quadrant D16,360,972517,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190233
B0184032
C0181852
D0547482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8941220.246057%
B8941530.592775%
C894160.067107%
D8941469952.555643%

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 12767 8943 12 12 0.09% 0.13%
B 12767 8943 17 17 0.13% 0.19%
C 12767 8943 2 2 0.02% 0.02%
D 12767 8943 3780 3780 29.61% 42.27%

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 10 83 606176 2947.22 1032 1015 205.3
A 9 143 66409 318.48 1032 1015 205.3
A 3 137 10656 46.95 1032 1015 205.3
B 5 184 177832 914.91 1013 989 193.3
B 12 111 23661 117.29 1013 989 193.3
B 11 111 21946 108.42 1013 989 193.3
C 15 214 369714 1638.98 981 986 225.0
C 9 187 62027 271.33 981 986 225.0
C 7 220 10073 40.39 981 986 225.0
D 12 235 12688045 68438.73 748 726 185.4
D 2 249 486915 2622.63 748 726 185.4
D 2 250 73105 390.43 748 726 185.4

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