ASTROSAT CZTI

Data Quality Report

Orbit 06893

Creation date: 2024-06-27T15:12:47.395599
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_005T01_9000000948_06893cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06893cztM0_level2_quad_clean.evt
Size (bytes)508,429,44092,122,560
Size484.9 MB 87.9 MB
Events in quadrant A3,379,405575,518
Events in quadrant B3,572,449582,837
Events in quadrant C3,369,448577,896
Events in quadrant D4,581,079545,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151373
B0155832
C0150672
D0189412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7290460.631001%
B72901001.371742%
C7290410.562414%
D72914746.501166%

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 7650 7291 2 2 0.03% 0.03%
B 7650 7291 2 2 0.03% 0.03%
C 7650 7291 0 0 0.00% 0.00%
D 7651 7292 376 376 4.91% 5.16%

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 35738 199.12 859 842 175.3
A 13 251 18633 101.52 859 842 175.3
A 13 14 15856 85.67 859 842 175.3
B 0 228 96370 576.02 867 845 165.8
B 0 219 45215 267.55 867 845 165.8
B 0 214 24433 142.24 867 845 165.8
C 9 247 73775 372.89 840 844 195.6
C 9 54 14776 71.23 840 844 195.6
C 13 61 6832 30.62 840 844 195.6
D 12 6 1277365 6324.31 822 796 201.9
D 7 55 72979 357.61 822 796 201.9
D 8 195 63229 309.3 822 796 201.9

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