ASTROSAT CZTI

Data Quality Report

Orbit 18945

Creation date: 2024-06-27T17:56:52.757717
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_090T01_9000002822_18945cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18945cztM0_level2_quad_clean.evt
Size (bytes)550,987,20095,293,440
Size525.5 MB 90.9 MB
Events in quadrant A3,547,745633,481
Events in quadrant B3,671,126649,912
Events in quadrant C3,232,479627,758
Events in quadrant D5,804,773531,472

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144601
B0148931
C0133861
D0214936

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344771.213745%
B6344641.008827%
C6344550.866961%
D6344115718.237705%

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 7619 6345 31 31 0.41% 0.49%
B 7619 6345 20 20 0.26% 0.32%
C 7619 6345 0 0 0.00% 0.00%
D 7619 6345 564 564 7.40% 8.89%

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 14 235 430898 2705.6 804 789 159.0
A 11 29 15300 91.28 804 789 159.0
A 13 254 9323 53.68 804 789 159.0
B 3 112 173015 1165.85 810 791 147.7
B 7 220 145506 979.63 810 791 147.7
B 0 189 128913 867.31 810 791 147.7
C 14 238 127259 700.51 789 795 180.5
C 3 233 30271 163.27 789 795 180.5
C 13 61 5616 26.7 789 795 180.5
D 7 238 2889917 16997.5 707 688 170.0
D 12 218 105954 619.29 707 688 170.0
D 1 52 65213 379.6 707 688 170.0

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