ASTROSAT CZTI

Data Quality Report

Orbit 31742

Creation date: 2024-06-27T20:32:09.859889
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_034T01_9000004632_31742cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31742cztM0_level2_quad_clean.evt
Size (bytes)673,545,60063,849,600
Size642.3 MB 60.9 MB
Events in quadrant A5,045,089380,829
Events in quadrant B5,840,237381,611
Events in quadrant C4,377,683370,486
Events in quadrant D4,717,128367,122

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193731
B0215531
C0172431
D0184841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62044407.092199%
B62053125.028203%
C62052774.464142%
D62051342.159549%

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 7469 6205 260 260 3.48% 4.19%
B 7469 6205 109 109 1.46% 1.76%
C 7469 6205 87 87 1.16% 1.40%
D 7470 6206 67 67 0.90% 1.08%

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 1648040 9513.16 880 866 173.1
A 13 254 11153 59.41 880 866 173.1
A 3 137 7971 41.03 880 866 173.1
B 6 159 1652610 10227.79 867 847 161.5
B 5 255 267091 1648.59 867 847 161.5
B 4 80 228581 1410.14 867 847 161.5
C 0 10 882825 4593.1 839 849 192.0
C 14 238 138530 717.01 839 849 192.0
C 10 22 38932 198.33 839 849 192.0
D 8 195 1129106 5558.59 868 849 203.0
D 12 233 182368 894.29 868 849 203.0
D 1 52 85995 419.49 868 849 203.0

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