ASTROSAT CZTI

Data Quality Report

Orbit 46153

Creation date: 2024-06-27T23:19:45.107483
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/AS1A13_092T03_9000006176_46153cztM0_level2.fits modeM0/AS1A13_092T03_9000006176_46153cztM0_level2_quad_clean.evt
Size (bytes)817,603,20075,574,080
Size779.7 MB 72.1 MB
Events in quadrant A5,372,133652,780
Events in quadrant B15,498,00674,610
Events in quadrant C4,797,111565,338
Events in quadrant D4,133,871577,554

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196941
B0498352
C0186161
D0165551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59881893.156313%
B5988542990.664663%
C598889614.963260%
D59883315.527722%

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 7033 5989 6 6 0.09% 0.10%
B 7032 5987 5244 5244 74.57% 87.59%
C 7033 5989 614 614 8.73% 10.25%
D 7033 5989 217 217 3.09% 3.62%

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 2680787 19202.13 673 659 139.6
A 0 247 27654 193.41 673 659 139.6
A 9 191 26585 185.75 673 659 139.6
B 10 246 14255966 325735.54 217 210 43.8
B 3 112 280150 6396.46 217 210 43.8
B 5 172 82585 1882.22 217 210 43.8
C 14 254 2221921 15036.71 628 632 147.7
C 12 2 82591 554.81 628 632 147.7
C 2 14 15097 97.92 628 632 147.7
D 5 235 517697 3130.39 655 634 165.2
D 2 249 397538 2402.93 655 634 165.2
D 13 249 268043 1618.94 655 634 165.2

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