ASTROSAT CZTI

Data Quality Report

Orbit 02149

Creation date: 2024-06-27T14:14:37.718341
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/AS1T01_072T02_9000000336_02149cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02149cztM0_level2_quad_clean.evt
Size (bytes)438,972,48085,962,240
Size418.6 MB 82.0 MB
Events in quadrant A3,094,829524,170
Events in quadrant B3,466,731531,455
Events in quadrant C3,128,348516,766
Events in quadrant D3,094,310509,097

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152312
B0157066
C0153322
D0154032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7488730.974893%
B7486821.095378%
C7488370.494124%
D7488380.507479%

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 7968 7489 0 0 0.00% 0.00%
B 7968 7488 0 0 0.00% 0.00%
C 7968 7489 11 11 0.14% 0.15%
D 7968 7489 4 4 0.05% 0.05%

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 15 175 5629 30.45 804 791 158.9
A 0 1 5019 26.61 804 791 158.9
A 14 238 2960 13.65 804 791 158.9
B 5 68 177884 1149.58 829 811 154.0
B 0 234 69980 449.05 829 811 154.0
B 4 200 24811 155.81 829 811 154.0
C 10 34 34103 192.33 783 788 173.2
C 12 4 14900 81.47 783 788 173.2
C 10 82 4661 22.36 783 788 173.2
D 6 112 52361 293.22 776 759 176.0
D 13 53 41250 230.09 776 759 176.0
D 13 88 25552 140.88 776 759 176.0

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