ASTROSAT CZTI

Data Quality Report

Orbit 23858

Creation date: 2024-06-27T18:59:28.942349
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/AS1A07_149T01_9000003534_23858cztM0_level2.evt modeM0/AS1A07_149T01_9000003534_23858cztM0_level2_quad_clean.evt
Size (bytes)505,848,960108,518,400
Size482.4 MB 103.5 MB
Events in quadrant A3,528,823702,337
Events in quadrant B3,679,249711,340
Events in quadrant C3,714,524678,446
Events in quadrant D3,879,456664,624

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155983
B0159884
C0157533
D0166663

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7606660.867736%
B7605911.196581%
C76051141.499014%
D76061101.446227%

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 8851 7609 0 0 0.00% 0.00%
B 8850 7608 1 1 0.01% 0.01%
C 8850 7608 0 0 0.00% 0.00%
D 8851 7609 64 64 0.72% 0.84%

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 13166 66.95 913 894 183.3
A 3 137 8133 39.49 913 894 183.3
A 0 226 8000 38.76 913 894 183.3
B 0 189 62060 352.7 910 886 173.4
B 15 32 21097 116.53 910 886 173.4
B 12 111 20956 115.71 910 886 173.4
C 7 247 174293 854.49 869 871 203.0
C 14 238 137530 673.35 869 871 203.0
C 0 10 13317 61.32 869 871 203.0
D 1 52 217075 1018.5 877 849 212.3
D 8 195 212791 998.32 877 849 212.3
D 12 233 38788 178.71 877 849 212.3

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