ASTROSAT CZTI

Data Quality Report

Orbit 32776

Creation date: 2024-06-27T20:41:54.927752
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/AS1T04_064T01_9000004730_32776cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32776cztM0_level2_quad_clean.evt
Size (bytes)832,959,36078,482,880
Size794.4 MB 74.8 MB
Events in quadrant A5,615,202479,148
Events in quadrant B4,516,765526,168
Events in quadrant C3,776,298542,252
Events in quadrant D10,918,486412,305

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205973
B0171342
C0151342
D0365702

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594491415.376851%
B59444567.671602%
C5944851.430013%
D5944225037.853297%

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 7377 5945 621 621 8.42% 10.45%
B 7377 5945 332 332 4.50% 5.58%
C 7377 5945 67 67 0.91% 1.13%
D 7377 5945 2427 2427 32.90% 40.82%

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 15 237 1874959 14125.78 653 640 132.7
A 12 16 697080 5248.71 653 640 132.7
A 14 63 378822 2850.16 653 640 132.7
B 12 1 1068301 8178.18 685 669 130.5
B 5 172 409240 3129.7 685 669 130.5
B 0 219 104874 798.22 685 669 130.5
C 7 221 759992 4834.04 674 681 157.1
C 0 10 243877 1548.27 674 681 157.1
C 8 79 46858 293.98 674 681 157.1
D 8 195 4898578 32585.17 588 577 150.3
D 2 250 1651357 10982.22 588 577 150.3
D 7 80 1053246 7003.14 588 577 150.3

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