ASTROSAT CZTI

Data Quality Report

Orbit 10146

Creation date: 2024-06-27T15:55:34.384137
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/AS1A03_116T01_9000001460_10146cztM0_level2.evt modeM0/AS1A03_116T01_9000001460_10146cztM0_level2_quad_clean.evt
Size (bytes)501,891,840114,039,360
Size478.6 MB 108.8 MB
Events in quadrant A3,609,608764,798
Events in quadrant B3,601,133774,532
Events in quadrant C3,126,668752,920
Events in quadrant D4,427,328714,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148713
B0149662
C0135132
D0176982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64071412.200718%
B6407901.404714%
C6407380.593101%
D64071672.606524%

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 7717 6407 67 67 0.87% 1.05%
B 7717 6408 18 18 0.23% 0.28%
C 7717 6408 0 0 0.00% 0.00%
D 7717 6408 98 98 1.27% 1.53%

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 15 223 180485 1077.16 839 825 166.8
A 15 174 93601 556.24 839 825 166.8
A 15 239 79723 473.04 839 825 166.8
B 4 81 122231 768.26 835 818 158.0
B 4 239 106673 669.81 835 818 158.0
B 0 214 59309 370.11 835 818 158.0
C 13 61 6075 28.72 801 807 183.4
C 14 67 4015 17.49 801 807 183.4
C 3 202 2013 6.57 801 807 183.4
D 1 52 450880 2354.77 803 783 191.1
D 8 195 398546 2080.98 803 783 191.1
D 2 136 212163 1105.88 803 783 191.1

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