ASTROSAT CZTI

Data Quality Report

Orbit 35767

Creation date: 2022-05-13T15:23:37.318860
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_058T14_9000005134_35767cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35767cztM0_level2_quad_clean.evt
Size (bytes)485,176,32089,527,680
Size462.7 MB 85.4 MB
Events in quadrant A2,764,915607,311
Events in quadrant B3,057,069609,780
Events in quadrant C3,078,653593,195
Events in quadrant D5,442,771538,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113733
B0123642
C0123222
D0197602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A516390.174317%
B5163861.665698%
C51631332.576022%
D516354510.555878%

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 7106 5164 0 0 0.00% 0.00%
B 7106 5164 52 52 0.73% 1.01%
C 7106 5164 110 110 1.55% 2.13%
D 7106 5164 573 573 8.06% 11.10%

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 156179 1160.17 668 659 134.0
A 7 191 11253 79.03 668 659 134.0
A 13 6 8148 55.87 668 659 134.0
B 5 172 233431 1894.27 654 640 122.9
B 4 232 89802 725.53 654 640 122.9
B 5 255 50192 403.22 654 640 122.9
C 1 23 267454 1856.28 628 634 143.7
C 15 214 215337 1493.7 628 634 143.7
C 0 10 121399 840.17 628 634 143.7
D 1 52 1399252 9321.61 622 606 150.0
D 14 52 788126 5248.62 622 606 150.0
D 10 118 381139 2536.15 622 606 150.0

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