ASTROSAT CZTI

Data Quality Report

Orbit 28962

Creation date: 2024-06-27T19:58:30.973428
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/AS1A10_123T08_9000004152_28962cztM0_level2.evt modeM0/AS1A10_123T08_9000004152_28962cztM0_level2_quad_clean.evt
Size (bytes)613,581,12080,769,600
Size585.2 MB 77.0 MB
Events in quadrant A3,004,392516,432
Events in quadrant B3,197,560529,450
Events in quadrant C3,182,623503,655
Events in quadrant D8,757,425442,454

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132291
B0137281
C0134691
D0305781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64981051.615882%
B64991742.677335%
C64991822.800431%
D6499158224.342206%

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 6893 6496 0 0 0.00% 0.00%
B 6894 6497 47 47 0.68% 0.72%
C 6894 6497 2 2 0.03% 0.03%
D 6894 6497 1469 1469 21.31% 22.61%

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 13 254 12685 76.28 770 752 156.4
A 6 16 10247 60.7 770 752 156.4
A 13 6 8594 50.13 770 752 156.4
B 5 255 134108 903.13 764 743 147.7
B 15 35 28765 189.76 764 743 147.7
B 12 111 18397 119.55 764 743 147.7
C 14 238 144987 829.94 740 744 173.8
C 3 233 73981 421.39 740 744 173.8
C 14 254 40147 226.72 740 744 173.8
D 7 80 3626592 21985.21 685 666 164.9
D 1 52 1064883 6452.71 685 666 164.9
D 8 195 910553 5516.95 685 666 164.9

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