ASTROSAT CZTI

Data Quality Report

Orbit 57031

Creation date: 2026-04-13T12:46:14.824745
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_083T14_9000006564_57031cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_57031cztM0_level2_quad_clean.evt
Size (bytes)398,448,00091,586,880
Size380.0 MB 87.3 MB
Events in quadrant A5,236,018584,334
Events in quadrant B2,898,431649,562
Events in quadrant C2,951,305578,658
Events in quadrant D3,192,571537,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197381
B0127751
C0131651
D0137081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60532964.890137%
B60531282.114654%
C60531201.982488%
D60521452.395902%

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 7173 6054 192 192 2.68% 3.17%
B 7173 6054 20 20 0.28% 0.33%
C 7173 6054 43 43 0.60% 0.71%
D 7172 6053 76 76 1.06% 1.26%

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 14 2525109 15456.93 661 645 163.3
A 4 207 76401 463.84 661 645 163.3
A 8 6 18885 111.68 661 645 163.3
B 10 16 78688 552.08 662 638 141.4
B 0 63 78586 551.36 662 638 141.4
B 0 245 27819 192.26 662 638 141.4
C 12 252 161885 909.76 655 647 177.2
C 6 223 69206 386.83 655 647 177.2
C 14 254 43716 243.01 655 647 177.2
D 8 240 244625 1344.67 648 619 181.5
D 12 251 139106 763.18 648 619 181.5
D 2 249 68720 375.29 648 619 181.5

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