ASTROSAT CZTI

Data Quality Report

Orbit 08776

Creation date: 2024-06-27T15:37:03.869158
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_08776cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08776cztM0_level2_quad_clean.evt
Size (bytes)676,368,000114,405,120
Size645.0 MB 109.1 MB
Events in quadrant A4,247,374732,511
Events in quadrant B4,205,834738,830
Events in quadrant C4,345,904727,211
Events in quadrant D7,111,213677,649

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181824
B0182943
C0187883
D0271023

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8468981.157298%
B84681782.102031%
C84682242.645253%
D84686047.132735%

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 8874 8470 0 0 0.00% 0.00%
B 8874 8470 17 17 0.19% 0.20%
C 8874 8471 168 168 1.89% 1.98%
D 8874 8470 406 406 4.58% 4.79%

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 258673 1240.95 1011 986 207.7
A 13 251 63992 303.42 1011 986 207.7
A 5 16 14214 63.7 1011 986 207.7
B 10 16 206378 1053.14 1014 986 195.0
B 12 111 22187 108.71 1014 986 195.0
B 11 111 17928 86.87 1014 986 195.0
C 9 68 494914 2154.96 987 991 229.2
C 13 61 7172 26.97 987 991 229.2
C 8 222 2686 7.4 987 991 229.2
D 2 16 1850460 8031.66 955 932 230.3
D 1 52 713843 3095.85 955 932 230.3
D 2 152 440182 1907.46 955 932 230.3

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