ASTROSAT CZTI

Data Quality Report

Orbit 55304

Creation date: 2025-12-19T19:58:49.008473
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_009T01_9000006534_55304cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55304cztM0_level2_quad_clean.evt
Size (bytes)408,715,20092,885,760
Size389.8 MB 88.6 MB
Events in quadrant A3,654,456589,870
Events in quadrant B3,404,547621,087
Events in quadrant C3,618,057558,361
Events in quadrant D3,873,993525,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166023
B0159393
C0165663
D0171493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74271071.440689%
B74271361.831157%
C74271602.154302%
D7427931.252188%

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 8952 7701 55 55 0.61% 0.71%
B 8952 7700 25 25 0.28% 0.32%
C 8952 7701 116 116 1.30% 1.51%
D 8952 7701 86 86 0.96% 1.12%

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 0 8 337183 1765.61 775 756 190.5
A 12 18 147801 771.71 775 756 190.5
A 3 14 35340 181.5 775 756 190.5
B 7 252 113690 679.32 770 740 166.3
B 0 199 108377 647.36 770 740 166.3
B 10 245 27125 158.69 770 740 166.3
C 13 3 213353 1019.51 760 750 208.5
C 12 249 149003 710.93 760 750 208.5
C 9 38 128201 611.17 760 750 208.5
D 6 239 220346 1027.34 757 725 213.8
D 2 31 160284 746.38 757 725 213.8
D 3 12 141626 659.1 757 725 213.8

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