ASTROSAT CZTI

Data Quality Report

Orbit 21261

Creation date: 2024-06-27T18:25:34.187660
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_037T01_9000003140_21261cztM0_level2.evt modeM0/AS1A05_037T01_9000003140_21261cztM0_level2_quad_clean.evt
Size (bytes)567,720,00098,784,000
Size541.4 MB 94.2 MB
Events in quadrant A3,259,382685,226
Events in quadrant B3,131,665693,358
Events in quadrant C2,928,149664,703
Events in quadrant D7,489,620550,896

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133941
B0130231
C0123711
D0262351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56731502.644104%
B5674961.691928%
C56731041.833245%
D5673160128.221400%

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 6893 5673 16 16 0.23% 0.28%
B 6894 5674 8 8 0.12% 0.14%
C 6893 5673 1 1 0.01% 0.02%
D 6893 5673 1463 1463 21.22% 25.79%

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 15 236 171244 1112.44 760 747 153.3
A 5 16 134277 871.24 760 747 153.3
A 9 143 13888 85.74 760 747 153.3
B 0 197 104431 725.36 748 731 143.0
B 0 245 39068 268.16 748 731 143.0
B 3 64 27771 189.14 748 731 143.0
C 14 238 113729 683.34 717 723 165.4
C 0 207 17911 103.93 717 723 165.4
C 13 61 5016 25.96 717 723 165.4
D 13 174 3512359 21732.99 663 645 161.6
D 13 153 533094 3295.17 663 645 161.6
D 12 233 451072 2787.56 663 645 161.6

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