ASTROSAT CZTI

Data Quality Report

Orbit 08774

Creation date: 2024-06-27T15:37:02.204894
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/AS1G07_010T01_9000001220_08774cztM0_level2.evt modeM0/AS1G07_010T01_9000001220_08774cztM0_level2_quad_clean.evt
Size (bytes)577,077,12091,249,920
Size550.3 MB 87.0 MB
Events in quadrant A3,336,858583,923
Events in quadrant B3,300,978589,778
Events in quadrant C3,129,112584,624
Events in quadrant D7,244,031525,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145743
B0145142
C0141202
D0262892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6880320.465116%
B6880590.857558%
C6880190.276163%
D688090413.139535%

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 7570 6881 1 1 0.01% 0.01%
B 7570 6881 10 10 0.13% 0.15%
C 7570 6881 0 0 0.00% 0.00%
D 7570 6881 901 901 11.90% 13.09%

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 8 5 169606 1021.35 811 794 165.3
A 13 251 23463 137.15 811 794 165.3
A 5 16 13995 79.87 811 794 165.3
B 10 16 109253 691.13 814 792 156.9
B 12 111 17661 107.49 814 792 156.9
B 4 173 16278 98.68 814 792 156.9
C 9 68 13497 68.4 796 800 185.6
C 13 61 5861 27.26 796 800 185.6
C 14 234 4813 21.62 796 800 185.6
D 2 16 3907721 21163.69 751 733 184.6
D 2 152 264717 1429.97 751 733 184.6
D 7 71 149887 807.95 751 733 184.6

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