ASTROSAT CZTI

Data Quality Report

Orbit 20571

Creation date: 2024-06-27T18:16:58.445169
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/AS1A05_088T03_9000003042_20571cztM0_level2.evt modeM0/AS1A05_088T03_9000003042_20571cztM0_level2_quad_clean.evt
Size (bytes)454,763,52095,935,680
Size433.7 MB 91.5 MB
Events in quadrant A3,146,791618,899
Events in quadrant B3,267,901622,349
Events in quadrant C3,191,257605,665
Events in quadrant D3,710,484590,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138282
B0139972
C0138212
D0155362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6713210.312826%
B6713430.640548%
C6713580.863995%
D6713440.655445%

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 7583 6714 0 0 0.00% 0.00%
B 7583 6714 2 2 0.03% 0.03%
C 7583 6714 0 0 0.00% 0.00%
D 7583 6714 18 18 0.24% 0.27%

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 12 96 16908 98.4 812 796 163.7
A 0 226 7039 38.13 812 796 163.7
A 3 137 6723 36.2 812 796 163.7
B 0 230 34195 217.18 811 790 153.8
B 12 111 18645 116.08 811 790 153.8
B 11 111 16753 103.78 811 790 153.8
C 14 238 122922 662.32 787 794 184.4
C 13 61 5366 24.79 787 794 184.4
C 3 233 1979 6.43 787 794 184.4
D 1 20 271078 1434.24 789 770 188.5
D 1 52 229006 1211.01 789 770 188.5
D 5 222 95591 503.12 789 770 188.5

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