ASTROSAT CZTI

Data Quality Report

Orbit 08775

Creation date: 2024-06-27T15:37:03.062884
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/AS1G07_010T01_9000001220_08775cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08775cztM0_level2_quad_clean.evt
Size (bytes)647,357,760112,777,920
Size617.4 MB 107.6 MB
Events in quadrant A4,304,218725,106
Events in quadrant B3,890,565733,902
Events in quadrant C3,691,775728,643
Events in quadrant D7,172,415666,844

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180753
B0170362
C0166152
D0271312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8066851.053806%
B8066841.041408%
C8066240.297545%
D80665727.091495%

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 9042 8068 42 42 0.46% 0.52%
B 9042 8068 12 12 0.13% 0.15%
C 9042 8068 0 0 0.00% 0.00%
D 9042 8068 440 440 4.87% 5.45%

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 8 5 482080 2413.93 963 940 199.3
A 13 251 53016 261.27 963 940 199.3
A 13 248 33830 165.01 963 940 199.3
B 10 16 86728 462.41 966 941 185.5
B 4 173 24225 125.51 966 941 185.5
B 12 111 21132 108.83 966 941 185.5
C 9 68 9430 38.52 943 946 220.3
C 13 61 6954 27.28 943 946 220.3
C 9 54 4949 18.17 943 946 220.3
D 2 16 2639722 11965.05 907 884 220.5
D 2 152 411248 1860.68 907 884 220.5
D 1 52 311482 1408.31 907 884 220.5

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