ASTROSAT CZTI

Data Quality Report

Orbit 23459

Creation date: 2024-06-27T18:54:36.836654
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/AS1A07_100T02_9000003470_23459cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23459cztM0_level2_quad_clean.evt
Size (bytes)572,420,160103,040,640
Size545.9 MB 98.3 MB
Events in quadrant A3,235,521682,321
Events in quadrant B3,164,696704,932
Events in quadrant C3,339,538674,757
Events in quadrant D7,157,325606,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137322
B0134802
C0139292
D0256182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6474290.447946%
B6474240.370714%
C6474921.421069%
D647490213.932654%

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 7589 6474 15 15 0.20% 0.23%
B 7589 6474 2 2 0.03% 0.03%
C 7589 6474 5 5 0.07% 0.08%
D 7588 6474 993 993 13.09% 15.34%

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 6 16 70360 433.84 794 777 160.4
A 4 2 42750 261.69 794 777 160.4
A 12 96 42688 261.31 794 777 160.4
B 12 111 17777 112.74 802 781 150.8
B 11 111 15307 96.35 802 781 150.8
B 14 111 13236 82.62 802 781 150.8
C 14 238 123424 676.36 779 785 181.3
C 1 16 67632 368.67 779 785 181.3
C 7 247 38332 207.07 779 785 181.3
D 7 238 3328069 18346.47 758 736 181.4
D 1 52 681754 3755.04 758 736 181.4
D 12 233 155307 852.28 758 736 181.4

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