ASTROSAT CZTI

Data Quality Report

Orbit 03628

Creation date: 2024-06-27T14:31:44.695332
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/AS1G05_234T02_9000000474_03628cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03628cztM0_level2_quad_clean.evt
Size (bytes)451,362,24061,758,720
Size430.5 MB 58.9 MB
Events in quadrant A2,969,424360,783
Events in quadrant B3,725,101356,496
Events in quadrant C3,305,470354,268
Events in quadrant D3,224,506341,920

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133812
B0151961
C0144621
D0145011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6546610.931867%
B65461181.802628%
C65461181.802628%
D65461412.153987%

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 7501 6547 8 8 0.11% 0.12%
B 7501 6547 36 36 0.48% 0.55%
C 7501 6547 59 59 0.79% 0.90%
D 7501 6547 82 82 1.09% 1.25%

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 0 31 26640 166.05 752 733 156.0
A 15 174 20946 129.55 752 733 156.0
A 13 14 14918 90.92 752 733 156.0
B 15 204 350232 2366.91 759 739 147.7
B 4 81 165781 1117.73 759 739 147.7
B 5 171 81809 549.04 759 739 147.7
C 2 53 359538 2116.41 725 727 169.5
C 9 247 103989 609.08 725 727 169.5
C 13 61 6277 32.74 725 727 169.5
D 9 35 287716 1646.81 722 701 174.3
D 13 223 97675 556.41 722 701 174.3
D 2 232 37950 213.72 722 701 174.3

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
Veto Counter