ASTROSAT CZTI

Data Quality Report

Orbit 07646

Creation date: 2024-06-27T15:22:15.157328
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/AS1G06_124T01_9000001054_07646cztM0_level2.evt modeM0/AS1G06_124T01_9000001054_07646cztM0_level2_quad_clean.evt
Size (bytes)612,040,32081,504,000
Size583.7 MB 77.7 MB
Events in quadrant A3,414,109497,332
Events in quadrant B3,538,314500,670
Events in quadrant C7,462,036475,182
Events in quadrant D3,621,448480,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151782
B0153391
C0273991
D0159981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7386580.785269%
B7386781.056052%
C73862783.763878%
D7386710.961278%

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 7636 7387 0 0 0.00% 0.00%
B 7636 7387 0 0 0.00% 0.00%
C 7636 7387 77 77 1.01% 1.04%
D 7636 7387 43 43 0.56% 0.58%

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 0 226 8474 42.2 884 866 180.3
A 12 194 7905 39.04 884 866 180.3
A 13 14 6471 31.09 884 866 180.3
B 0 219 38214 217.81 886 863 171.5
B 0 214 27036 152.62 886 863 171.5
B 4 173 24730 139.18 886 863 171.5
C 9 68 4120711 20916.37 848 853 197.0
C 5 37 27097 133.24 848 853 197.0
C 13 61 6339 27.85 848 853 197.0
D 13 104 217942 1035.35 857 830 209.7
D 14 34 64453 303.4 857 830 209.7
D 2 152 33661 156.56 857 830 209.7

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