ASTROSAT CZTI

Data Quality Report

Orbit 16385

Creation date: 2024-06-27T17:21:55.782854
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_069T05_9000002420_16385cztM0_level2.evt modeM0/AS1A05_069T05_9000002420_16385cztM0_level2_quad_clean.evt
Size (bytes)531,956,16070,827,840
Size507.3 MB 67.5 MB
Events in quadrant A3,468,428437,350
Events in quadrant B3,882,391452,113
Events in quadrant C3,335,123421,354
Events in quadrant D4,986,521382,901

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141583
B0155522
C0137202
D0190782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458600.929080%
B64581121.734283%
C6458580.898111%
D64583445.326727%

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 7819 6460 18 18 0.23% 0.28%
B 7819 6460 30 30 0.38% 0.46%
C 7819 6460 0 0 0.00% 0.00%
D 7819 6460 278 278 3.56% 4.30%

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 15 174 176631 1038.48 845 828 169.3
A 9 143 22547 128.3 845 828 169.3
A 15 223 18949 107.04 845 828 169.3
B 10 16 186444 1169.67 855 837 158.7
B 15 35 164786 1033.19 855 837 158.7
B 0 189 61171 380.22 855 837 158.7
C 14 238 127197 673.32 809 815 187.7
C 3 233 49092 257.2 809 815 187.7
C 13 61 5888 27.03 809 815 187.7
D 2 122 1884335 9812.81 788 767 191.9
D 12 218 77729 400.95 788 767 191.9
D 2 234 24025 121.17 788 767 191.9

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