ASTROSAT CZTI

Data Quality Report

Orbit 33750

Creation date: 2024-06-27T20:52:14.068286
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/AS1A11_086T01_9000004820_33750cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33750cztM0_level2_quad_clean.evt
Size (bytes)87,376,32015,364,800
Size83.3 MB 14.7 MB
Events in quadrant A902,42194,107
Events in quadrant B509,340102,342
Events in quadrant C506,075102,159
Events in quadrant D664,08595,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033002
B020611
C020031
D025461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A90210111.197339%
B902101.108647%
C902111.219512%
D902131.441242%

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 902 902 100 100 11.09% 11.09%
B 902 902 6 6 0.67% 0.67%
C 902 902 11 11 1.22% 1.22%
D 902 902 12 12 1.33% 1.33%

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 14 4 488517 21409.84 104 102 22.8
A 10 83 3928 167.71 104 102 22.8
A 13 6 3727 158.9 104 102 22.8
B 5 172 37531 1667.49 106 103 22.4
B 15 222 23555 1044.83 106 103 22.4
B 5 255 14406 637.23 106 103 22.4
C 0 10 44458 1736.02 102 103 25.5
C 15 214 43207 1687.06 102 103 25.5
C 3 233 12774 495.93 102 103 25.5
D 8 195 112256 4200.46 103 100 26.7
D 1 47 64932 2428.09 103 100 26.7
D 2 249 30452 1136.74 103 100 26.7

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