ASTROSAT CZTI

Data Quality Report

Orbit 31216

Creation date: 2024-06-27T20:25:08.243137
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_019T01_9000004516_31216cztM0_level2.evt modeM0/AS1T04_019T01_9000004516_31216cztM0_level2_quad_clean.evt
Size (bytes)1,114,770,240169,390,080
Size1.0 GB 161.5 MB
Events in quadrant A6,064,4151,086,762
Events in quadrant B9,964,3211,081,404
Events in quadrant C6,471,4541,039,903
Events in quadrant D10,388,4131,027,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264943
B0390293
C0273933
D0402823

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12939860.664657%
B129392281.762115%
C129392592.001700%
D129382151.661772%

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 14169 12941 1 1 0.01% 0.01%
B 14169 12941 0 0 0.00% 0.00%
C 14169 12941 12 12 0.08% 0.09%
D 14168 12940 30 30 0.21% 0.23%

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 20648 60.56 1570 1542 315.5
A 3 137 16492 47.38 1570 1542 315.5
A 0 226 12985 36.27 1570 1542 315.5
B 6 159 3853423 12889.92 1543 1497 298.8
B 12 111 38586 124.11 1543 1497 298.8
B 11 111 35917 115.18 1543 1497 298.8
C 14 238 255532 712.96 1504 1513 356.3
C 0 10 141206 392.08 1504 1513 356.3
C 3 233 84771 233.68 1504 1513 356.3
D 8 195 4669949 13118.87 1512 1479 355.9
D 2 234 49857 135.95 1512 1479 355.9
D 0 60 16804 43.06 1512 1479 355.9

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