ASTROSAT CZTI

Data Quality Report

Orbit 20748

Creation date: 2024-06-27T18:19:08.005800
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_101T10_9000003068_20748cztM0_level2.evt modeM0/AS1A05_101T10_9000003068_20748cztM0_level2_quad_clean.evt
Size (bytes)589,415,040127,736,640
Size562.1 MB 121.8 MB
Events in quadrant A3,350,256863,322
Events in quadrant B3,467,337859,792
Events in quadrant C4,192,463830,819
Events in quadrant D6,337,362798,132

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151152
B0153102
C0174712
D0240022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7424290.390625%
B7424460.619612%
C74242643.556034%
D74245046.788793%

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 7904 7426 1 1 0.01% 0.01%
B 7904 7426 7 7 0.09% 0.09%
C 7904 7426 91 91 1.15% 1.23%
D 7904 7426 409 409 5.17% 5.51%

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 5 16 20177 111.42 866 847 173.5
A 0 226 7488 38.28 866 847 173.5
A 3 137 7247 36.89 866 847 173.5
B 0 190 20590 120.27 864 844 164.2
B 12 111 19788 115.39 864 844 164.2
B 11 111 17061 98.78 864 844 164.2
C 9 54 816882 4249.18 827 832 192.0
C 14 238 129489 669.92 827 832 192.0
C 3 233 16127 79.64 827 832 192.0
D 5 222 2255459 11373.03 821 797 198.2
D 1 52 452867 2280.34 821 797 198.2
D 12 227 237362 1193.29 821 797 198.2

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