ASTROSAT CZTI

Data Quality Report

Orbit 03156

Creation date: 2024-06-27T14:25:19.639788
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/AS1G05_218T02_9000000434_03156cztM0_level2.evt modeM0/AS1G05_218T02_9000000434_03156cztM0_level2_quad_clean.evt
Size (bytes)425,854,08084,314,880
Size406.1 MB 80.4 MB
Events in quadrant A2,900,108542,292
Events in quadrant B3,187,131551,728
Events in quadrant C3,158,646527,572
Events in quadrant D3,245,669515,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125632
B0133821
C0135081
D0138781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5966941.575595%
B59661191.994636%
C59661672.799195%
D59662333.905464%

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 7221 5966 1 1 0.01% 0.02%
B 7221 5967 15 15 0.21% 0.25%
C 7221 5967 98 98 1.36% 1.64%
D 7221 5967 134 134 1.86% 2.25%

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 12 247 80306 557.48 706 691 142.8
A 3 1 25885 176.41 706 691 142.8
A 14 249 25006 170.26 706 691 142.8
B 4 81 127662 936.86 714 699 135.5
B 15 85 102591 751.86 714 699 135.5
B 5 175 90152 660.07 714 699 135.5
C 14 223 356563 2292.13 670 672 155.3
C 12 4 44646 283.22 670 672 155.3
C 14 234 41091 260.32 670 672 155.3
D 2 136 432970 2681.39 671 649 161.2
D 13 223 54188 332.07 671 649 161.2
D 13 114 45050 275.39 671 649 161.2

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