ASTROSAT CZTI

Data Quality Report

Orbit 17924

Creation date: 2024-06-27T17:42:40.255323
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/AS1T03_025T01_9000002670_17924cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17924cztM0_level2_quad_clean.evt
Size (bytes)478,503,360117,722,880
Size456.3 MB 112.3 MB
Events in quadrant A3,372,918764,186
Events in quadrant B3,464,434787,419
Events in quadrant C3,427,356748,665
Events in quadrant D3,710,595737,100

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155082
B0155802
C0155382
D0168382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7599690.908014%
B7599841.105409%
C7599851.118568%
D75981291.697815%

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 7855 7601 0 0 0.00% 0.00%
B 7855 7601 0 0 0.00% 0.00%
C 7855 7601 0 0 0.00% 0.00%
D 7854 7600 70 70 0.89% 0.92%

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 15 174 10193 52.8 873 855 176.9
A 0 226 7612 38.21 873 855 176.9
A 3 137 6791 33.56 873 855 176.9
B 12 111 20269 114.57 882 857 169.4
B 11 111 17621 98.94 882 857 169.4
B 14 111 14848 82.57 882 857 169.4
C 14 238 130508 656.25 843 847 197.6
C 3 233 7153 31.92 843 847 197.6
C 13 61 5836 25.25 843 847 197.6
D 7 238 227570 1103.5 844 819 205.5
D 12 110 87088 419.84 844 819 205.5
D 10 70 84634 407.89 844 819 205.5

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