ASTROSAT CZTI

Data Quality Report

Orbit 58180

Creation date: 2026-06-30T19:10:28.315075
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/AS1A14_042T02_9000006586_58180cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58180cztM0_level2_quad_clean.evt
Size (bytes)548,144,64088,096,320
Size522.8 MB 84.0 MB
Events in quadrant A2,832,414607,369
Events in quadrant B4,719,382617,795
Events in quadrant C2,869,018578,485
Events in quadrant D9,394,700436,880

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127551
B0181041
C0130701
D0321671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6123901.469868%
B61244627.544089%
C6124761.241019%
D6124152324.869366%

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 7133 6124 6 6 0.08% 0.10%
B 7134 6125 290 290 4.07% 4.73%
C 7134 6125 27 27 0.38% 0.44%
D 7134 6125 1540 1540 21.59% 25.14%

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 3 245 55151 319.31 690 672 170.6
A 13 248 43226 249.42 690 672 170.6
A 4 3 25561 145.88 690 672 170.6
B 10 128 1010935 7057.52 663 639 143.2
B 2 249 734280 5124.92 663 639 143.2
B 4 201 73156 506.57 663 639 143.2
C 6 223 88997 484.08 664 658 182.5
C 15 201 77178 419.32 664 658 182.5
C 9 237 44019 237.61 664 658 182.5
D 12 110 5837024 33394.42 619 592 174.8
D 8 160 546089 3121.18 619 592 174.8
D 8 240 234593 1338.89 619 592 174.8

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