ASTROSAT CZTI

Data Quality Report

Orbit 31503

Creation date: 2024-06-27T20:29:25.654812
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/AS1T04_030T01_9000004588_31503cztM0_level2.evt modeM0/AS1T04_030T01_9000004588_31503cztM0_level2_quad_clean.evt
Size (bytes)698,474,88086,970,240
Size666.1 MB 82.9 MB
Events in quadrant A3,901,089580,493
Events in quadrant B5,498,382536,271
Events in quadrant C6,367,924499,692
Events in quadrant D4,902,641519,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03412117915
B04702025691
C04535921718
D04040921105

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0319175
B0310158
C0319169
D0321171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105
B083
C083
D072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73502553.469388%
B69333575.149286%
C7088109315.420429%
D71123154.429134%

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 19534 8047 27 27 0.14% 0.34%
B 17388 7534 24 24 0.14% 0.32%
C 19530 7758 544 544 2.79% 7.01%
D 17582 7768 115 115 0.65% 1.48%

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 0 13 380889 2053.1 913 892 185.1
A 13 254 12804 64.36 913 892 185.1
A 3 137 9537 46.71 913 892 185.1
B 6 159 1891552 11579.05 845 822 163.3
B 5 172 56332 339.95 845 822 163.3
B 4 80 47830 287.88 845 822 163.3
C 3 233 2173005 11446.3 804 806 189.8
C 10 22 883160 4649.52 804 806 189.8
C 14 238 129305 677.12 804 806 189.8
D 8 195 999539 4885.49 853 826 204.4
D 12 218 317092 1547.11 853 826 204.4
D 12 233 95549 463.37 853 826 204.4

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