ASTROSAT CZTI

Data Quality Report

Orbit 21390

Creation date: 2024-06-27T18:27:12.208598
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/AS1C04_001T01_9000003156_21390cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21390cztM0_level2_quad_clean.evt
Size (bytes)449,481,60099,642,240
Size428.7 MB 95.0 MB
Events in quadrant A2,981,644667,284
Events in quadrant B2,927,219672,885
Events in quadrant C4,210,076626,853
Events in quadrant D3,085,849631,351

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125171
B0125252
C0166361
D0130851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6004200.333111%
B6004320.532978%
C60041512.514990%
D6004781.299134%

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 7099 6004 1 1 0.01% 0.02%
B 7099 6004 5 5 0.07% 0.08%
C 7099 6005 13 13 0.18% 0.22%
D 7099 6004 26 26 0.37% 0.43%

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 5 168 124748 849.79 726 712 146.0
A 15 174 36926 248.11 726 712 146.0
A 12 96 10689 68.35 726 712 146.0
B 3 64 32928 237.93 721 703 135.4
B 0 190 19742 140.57 721 703 135.4
B 5 172 16345 115.49 721 703 135.4
C 3 233 1444047 9158.92 681 685 157.6
C 14 238 109764 692.16 681 685 157.6
C 13 61 4723 25.62 681 685 157.6
D 12 235 155669 920.7 692 672 168.3
D 13 174 131282 775.83 692 672 168.3
D 15 145 50254 294.52 692 672 168.3

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