ASTROSAT CZTI

Data Quality Report

Orbit 31094

Creation date: 2024-06-27T20:23:17.129985
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/AS1A10_109T01_9000004492_31094cztM0_level2.evt modeM0/AS1A10_109T01_9000004492_31094cztM0_level2_quad_clean.evt
Size (bytes)549,336,960118,857,600
Size523.9 MB 113.4 MB
Events in quadrant A3,257,624806,426
Events in quadrant B5,169,996808,031
Events in quadrant C3,661,424785,260
Events in quadrant D4,125,947765,270

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135292
B0193352
C0148202
D0168162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6234360.577478%
B62341722.759063%
C62342914.667950%
D6234691.106833%

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 7494 6235 0 0 0.00% 0.00%
B 7494 6235 3 3 0.04% 0.05%
C 7494 6235 46 46 0.61% 0.74%
D 7494 6235 9 9 0.12% 0.14%

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 13 254 12861 71.66 844 830 167.9
A 3 137 8040 42.95 844 830 167.9
A 0 226 6969 36.57 844 830 167.9
B 6 159 1775265 11246.5 837 816 157.8
B 0 229 45428 282.75 837 816 157.8
B 0 230 28153 173.26 837 816 157.8
C 0 10 236647 1235.08 821 831 190.9
C 14 238 133949 697.2 821 831 190.9
C 10 22 70350 364.1 821 831 190.9
D 13 174 525064 2691.11 829 809 194.8
D 8 195 427415 2189.85 829 809 194.8
D 2 234 23248 115.18 829 809 194.8

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