ASTROSAT CZTI

Data Quality Report

Orbit 58277

Creation date: 2026-07-06T08:11:29.057423
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_044T03_9000006588_58277cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58277cztM0_level2_quad_clean.evt
Size (bytes)409,924,800102,844,800
Size390.9 MB 98.1 MB
Events in quadrant A3,500,417668,663
Events in quadrant B3,683,967715,587
Events in quadrant C3,666,756635,179
Events in quadrant D3,774,006603,608

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155422
B0159202
C0162412
D0162622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7053660.935772%
B70541191.686986%
C70541411.998866%
D70531061.502907%

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 8913 7055 20 20 0.22% 0.28%
B 8914 7056 55 55 0.62% 0.78%
C 8914 7056 96 96 1.08% 1.36%
D 8913 7055 102 102 1.14% 1.45%

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 4 249 182401 961.68 759 738 188.9
A 4 238 129323 680.7 759 738 188.9
A 12 114 72886 381.93 759 738 188.9
B 10 246 139582 860.71 751 723 161.3
B 4 201 94854 583.47 751 723 161.3
B 0 153 72819 446.88 751 723 161.3
C 13 3 493591 2413.95 735 728 204.2
C 6 223 153785 749.64 735 728 204.2
C 12 252 50237 242.49 735 728 204.2
D 12 110 283054 1361.48 732 698 207.4
D 2 249 223413 1073.9 732 698 207.4
D 12 248 87016 416.21 732 698 207.4

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