ASTROSAT CZTI

Data Quality Report

Orbit 52285

Creation date: 2025-07-22T01:37:14.461527
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/AS1C09_011T05_9000006474_52285cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52285cztM0_level2_quad_clean.evt
Size (bytes)1,075,089,60080,369,280
Size1.0 GB 76.6 MB
Events in quadrant A4,681,956713,625
Events in quadrant B7,027,060739,206
Events in quadrant C15,923,95311,508
Events in quadrant D11,554,469423,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194760
B0263270
C0526940
D0397850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78513033.859381%
B78516778.623105%
C7850774098.598726%
D7850301938.458599%

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 7851 7851 202 202 2.57% 2.57%
B 7851 7851 375 375 4.78% 4.78%
C 7849 7849 4589 4589 58.47% 58.47%
D 7850 7850 2658 2658 33.86% 33.86%

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 522588 2561.85 819 799 203.7
A 3 114 171570 838.44 819 799 203.7
A 5 240 127482 621.98 819 799 203.7
B 7 0 1127979 6610.58 806 779 170.5
B 10 254 435545 2549.73 806 779 170.5
B 4 171 404682 2368.73 806 779 170.5
C 15 178 6318484 131466.58 168 166 48.1
C 0 161 4055489 84379.97 168 166 48.1
C 15 158 3346885 69635.89 168 166 48.1
D 7 60 3941147 22046.66 621 591 178.7
D 12 18 1416226 7920.21 621 591 178.7
D 15 93 1309159 7321.19 621 591 178.7

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