ASTROSAT CZTI

Data Quality Report

Orbit 45141

Creation date: 2024-06-27T23:09:53.418790
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_017T02_9000006046_45141cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45141cztM0_level2_quad_clean.evt
Size (bytes)664,735,680105,629,760
Size633.9 MB 100.7 MB
Events in quadrant A7,486,390698,621
Events in quadrant B3,498,013810,973
Events in quadrant C6,849,877608,248
Events in quadrant D6,261,364620,313

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268182
B0145122
C0247012
D0231134

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A659489813.618441%
B65941041.577191%
C6595151122.911296%
D659496114.573855%

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 7739 6595 571 571 7.38% 8.66%
B 7739 6595 9 9 0.12% 0.14%
C 7740 6596 1383 1383 17.87% 20.97%
D 7739 6594 781 781 10.09% 11.84%

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 2445450 15436.44 765 750 158.4
A 15 223 2077153 13110.92 765 750 158.4
A 3 137 8213 47.12 765 750 158.4
B 4 170 117493 738.03 791 768 158.2
B 0 155 59496 371.33 791 768 158.2
B 0 183 52655 328.07 791 768 158.2
C 12 2 4149275 26441.08 662 668 156.9
C 11 16 63787 402.29 662 668 156.9
C 15 208 21674 133.88 662 668 156.9
D 13 249 1314593 7174.91 732 712 183.1
D 5 222 594138 3240.61 732 712 183.1
D 5 235 463935 2529.59 732 712 183.1

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