ASTROSAT CZTI

Data Quality Report

Orbit 06674

Creation date: 2024-06-27T15:10:08.621238
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/AS1A02_170T03_9000000910_06674cztM0_level2.evt modeM0/AS1A02_170T03_9000000910_06674cztM0_level2_quad_clean.evt
Size (bytes)490,792,32082,673,280
Size468.1 MB 78.8 MB
Events in quadrant A2,766,309540,760
Events in quadrant B2,971,159550,070
Events in quadrant C2,899,950541,202
Events in quadrant D5,814,190447,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124982
B0129842
C0128592
D0215152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6069170.280112%
B6069310.510793%
C6069360.593178%
D6069103617.070358%

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 7359 6070 0 0 0.00% 0.00%
B 7359 6070 0 0 0.00% 0.00%
C 7359 6070 9 9 0.12% 0.15%
D 7359 6070 845 845 11.48% 13.92%

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 8 15 41759 286.73 702 686 143.2
A 3 1 10972 71.81 702 686 143.2
A 0 226 6749 42.33 702 686 143.2
B 4 81 87305 651.46 714 698 132.9
B 0 219 62695 466.34 714 698 132.9
B 4 80 21109 153.53 714 698 132.9
C 9 247 182451 1124.65 695 697 161.6
C 13 61 5535 29.94 695 697 161.6
C 1 16 5240 28.11 695 697 161.6
D 2 33 2736989 17943.51 629 610 152.5
D 8 195 319984 2094.26 629 610 152.5
D 2 152 136814 893.14 629 610 152.5

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