ASTROSAT CZTI

Data Quality Report

Orbit 58319

Creation date: 2026-07-09T05:13:03.936234
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_58319cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58319cztM0_level2_quad_clean.evt
Size (bytes)404,884,800100,679,040
Size386.1 MB 96.0 MB
Events in quadrant A3,439,679653,710
Events in quadrant B4,053,315686,324
Events in quadrant C3,082,529633,018
Events in quadrant D3,874,216593,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151353
B0168932
C0144232
D0163822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913580.838999%
B69142653.832803%
C6914330.477292%
D6914660.954585%

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 8638 6915 21 21 0.24% 0.30%
B 8639 6916 167 167 1.93% 2.41%
C 8639 6916 17 17 0.20% 0.25%
D 8639 6916 55 55 0.64% 0.80%

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 13 248 230034 1207.77 747 726 189.9
A 7 64 59004 306.95 747 726 189.9
A 0 12 53572 278.34 747 726 189.9
B 4 201 320400 2029.25 731 704 157.5
B 2 249 172032 1087.49 731 704 157.5
B 5 185 153783 971.66 731 704 157.5
C 6 223 56896 280.04 730 725 200.6
C 12 252 34486 168.31 730 725 200.6
C 6 13 33807 164.93 730 725 200.6
D 11 129 371926 1797.98 721 690 206.5
D 12 110 222279 1073.2 721 690 206.5
D 2 62 183192 883.9 721 690 206.5

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