ASTROSAT CZTI

Data Quality Report

Orbit 32815

Creation date: 2024-06-27T20:42:20.174189
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/AS1A11_044T01_9000004732_32815cztM0_level2.evt modeM0/AS1A11_044T01_9000004732_32815cztM0_level2_quad_clean.evt
Size (bytes)533,782,080112,452,480
Size509.1 MB 107.2 MB
Events in quadrant A2,624,161768,964
Events in quadrant B3,205,877791,507
Events in quadrant C2,941,565793,535
Events in quadrant D7,044,572689,679

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108043
B0126532
C0115972
D0246692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168180.348297%
B51681272.457430%
C5168631.219040%
D516888617.143963%

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 7261 5169 9 9 0.12% 0.17%
B 7261 5169 78 78 1.07% 1.51%
C 7261 5169 51 51 0.70% 0.99%
D 7261 5169 766 766 10.55% 14.82%

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 15 17 42872 330.29 647 635 127.9
A 9 143 41209 317.29 647 635 127.9
A 7 16 30190 231.12 647 635 127.9
B 5 172 384745 3239.74 653 639 118.6
B 12 1 64691 540.25 653 639 118.6
B 0 229 63425 529.57 653 639 118.6
C 0 10 303670 2046.62 652 660 148.1
C 14 67 28358 187.08 652 660 148.1
C 3 233 17548 114.07 652 660 148.1
D 8 195 2808474 18130.68 615 605 154.9
D 12 6 454152 2928.6 615 605 154.9
D 2 250 417787 2693.78 615 605 154.9

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