ASTROSAT CZTI

Data Quality Report

Orbit 56162

Creation date: 2026-02-14T03:21:06.806134
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_083T04_9000006550_56162cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56162cztM0_level2_quad_clean.evt
Size (bytes)913,498,56087,914,880
Size871.2 MB 83.8 MB
Events in quadrant A12,996,760332,771
Events in quadrant B4,855,236724,330
Events in quadrant C3,703,587660,147
Events in quadrant D11,682,678425,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436930
B0196280
C0168460
D0398920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7447420456.452263%
B74483714.981203%
C74481041.396348%
D7448258834.747583%

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 7447 7447 3152 3152 42.33% 42.33%
B 7448 7448 290 290 3.89% 3.89%
C 7448 7448 107 107 1.44% 1.44%
D 7448 7448 2638 2638 35.42% 35.42%

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 12 115 5292908 37912.4 559 545 139.6
A 9 250 4347069 31136.78 559 545 139.6
A 15 32 744644 5330.43 559 545 139.6
B 5 185 700663 4319.81 764 739 162.0
B 4 171 276655 1702.91 764 739 162.0
B 10 247 253917 1562.57 764 739 162.0
C 12 252 618446 3016.73 750 742 204.8
C 12 241 99482 482.22 750 742 204.8
C 6 223 17814 83.38 750 742 204.8
D 8 240 4636707 25777.36 627 597 179.9
D 8 129 4033989 22426.17 627 597 179.9
D 2 249 242355 1344.21 627 597 179.9

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