ASTROSAT CZTI

Data Quality Report

Orbit 20190516_A05_012T01_9000002918_level2

Creation date: 2025-11-30T05:35:57.682757
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/AS1A05_012T01_9000002918cztM0_level2.fits modeM0/AS1A05_012T01_9000002918cztM0_level2_quad_clean.evt
Size (bytes)214,283,520215,850,240
Size204.4 MB 205.9 MB
Events in quadrant A1,310,7661,322,625
Events in quadrant B1,247,0001,288,065
Events in quadrant C1,269,2121,242,046
Events in quadrant D1,103,5081,125,823

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481640
B0547760
C0478850
D0605350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A226367923.498851%
B2263611515.084821%
C226368343.684397%
D2263612885.690051%

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 27817 22633 0 0 0.00% 0.00%
B 27817 22632 0 0 0.00% 0.00%
C 27817 22633 0 0 0.00% 0.00%
D 27817 22630 0 0 0.00% 0.00%

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 29 1250 10.83 340 317 86.1
A 7 110 1049 8.5 340 317 86.1
A 9 19 988 7.79 340 317 86.1
B 2 9 933 9.14 329 312 67.9
B 14 254 847 7.88 329 312 67.9
B 3 17 823 7.52 329 312 67.9
C 12 249 907 6.79 335 310 87.9
C 12 241 898 6.69 335 310 87.9
C 9 233 891 6.61 335 310 87.9
D 15 46 789 5.76 315 285 87.5
D 3 14 788 5.75 315 285 87.5
D 3 31 780 5.66 315 285 87.5

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