ASTROSAT CZTI

Data Quality Report

Orbit 35194

Creation date: 2022-04-02T03:04:25.088236
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/AS1T05_020T01_9000005050_35194cztM0_level2.evt modeM0/AS1T05_020T01_9000005050_35194cztM0_level2_quad_clean.evt
Size (bytes)715,619,52084,746,880
Size682.5 MB 80.8 MB
Events in quadrant A2,801,810578,639
Events in quadrant B8,186,799497,473
Events in quadrant C3,378,014569,547
Events in quadrant D6,915,137514,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120293
B0283742
C0134522
D0246752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5791110.189950%
B5791193133.344845%
C57911422.452081%
D579184014.505267%

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 7164 5792 3 3 0.04% 0.05%
B 7164 5791 1293 1293 18.05% 22.33%
C 7164 5792 105 105 1.47% 1.81%
D 7164 5792 747 747 10.43% 12.90%

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 10 83 103142 743.71 678 664 137.8
A 7 191 17089 119.2 678 664 137.8
A 13 6 16796 117.07 678 664 137.8
B 5 236 5705353 49567.11 593 577 115.1
B 3 112 50575 434.42 593 577 115.1
B 0 189 25673 218.05 593 577 115.1
C 0 10 542697 3584.1 654 660 151.2
C 15 214 239984 1582.48 654 660 151.2
C 14 67 17065 108.47 654 660 151.2
D 8 195 2810205 18147.06 627 609 154.8
D 10 118 559353 3608.9 627 609 154.8
D 2 249 253971 1636.45 627 609 154.8

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