ASTROSAT CZTI

Data Quality Report

Orbit 20828

Creation date: 2024-06-27T18:20:01.967551
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_013T01_9000003070_20828cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20828cztM0_level2_quad_clean.evt
Size (bytes)524,471,040106,571,520
Size500.2 MB 101.6 MB
Events in quadrant A3,073,418739,489
Events in quadrant B3,315,329738,713
Events in quadrant C3,123,452719,651
Events in quadrant D5,986,974633,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125801
B0133861
C0128861
D0215852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5662651.148004%
B56631242.189652%
C56631142.013067%
D5662135323.896150%

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 7002 5662 0 0 0.00% 0.00%
B 7003 5663 27 27 0.39% 0.48%
C 7003 5663 1 1 0.01% 0.02%
D 7002 5662 1279 1279 18.27% 22.59%

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 0 226 7165 40.27 800 787 158.4
A 3 137 5932 32.48 800 787 158.4
A 12 194 5689 30.95 800 787 158.4
B 7 220 148995 1041.69 782 769 142.3
B 0 219 44519 307.46 782 769 142.3
B 3 64 25224 171.86 782 769 142.3
C 14 238 123752 714.36 765 774 172.2
C 9 54 12804 69.88 765 774 172.2
C 13 61 5446 27.14 765 774 172.2
D 1 52 2664100 16179.16 702 685 164.6
D 1 20 339209 2056.4 702 685 164.6
D 9 1 283011 1715.02 702 685 164.6

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