ASTROSAT CZTI

Data Quality Report

Orbit 55684

Creation date: 2026-01-14T10:51:02.243547
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_099T04_9000006540_55684cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55684cztM0_level2_quad_clean.evt
Size (bytes)416,986,56095,123,520
Size397.7 MB 90.7 MB
Events in quadrant A4,013,777591,891
Events in quadrant B3,112,410666,668
Events in quadrant C3,008,581599,884
Events in quadrant D4,770,725547,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169950
B0145310
C0143500
D0191510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68093394.978705%
B6809320.469966%
C6809240.352475%
D68103194.684288%

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 6809 6809 293 293 4.30% 4.30%
B 6809 6809 26 26 0.38% 0.38%
C 6809 6809 17 17 0.25% 0.25%
D 6810 6810 316 316 4.64% 4.64%

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 7 64 1108492 6534.32 683 665 169.5
A 0 8 81778 478.43 683 665 169.5
A 8 6 32364 186.97 683 665 169.5
B 5 172 284581 1904.2 691 667 149.1
B 10 247 31198 204.77 691 667 149.1
B 4 206 19639 127.24 691 667 149.1
C 12 252 135671 716.13 683 677 188.5
C 13 3 108583 572.43 683 677 188.5
C 6 223 29546 153.15 683 677 188.5
D 8 245 1084417 5720.68 673 644 189.4
D 11 129 694331 3661.62 673 644 189.4
D 10 181 146116 767.87 673 644 189.4

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