ASTROSAT CZTI

Data Quality Report

Orbit 18841

Creation date: 2024-06-27T17:55:32.227690
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_194T13_9000002814_18841cztM0_level2.evt modeM0/AS1A05_194T13_9000002814_18841cztM0_level2_quad_clean.evt
Size (bytes)408,003,84064,782,720
Size389.1 MB 61.8 MB
Events in quadrant A2,737,880398,878
Events in quadrant B3,572,150401,396
Events in quadrant C2,805,906383,635
Events in quadrant D2,848,775374,887

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118071
B0143591
C0119611
D0125291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5764120.208189%
B5764811.405274%
C5764400.693963%
D5764400.693963%

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 6839 5765 4 4 0.06% 0.07%
B 6839 5765 30 30 0.44% 0.52%
C 6839 5765 2 2 0.03% 0.03%
D 6839 5765 15 15 0.22% 0.26%

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 15 174 16691 113.14 703 687 141.5
A 11 29 10398 68.65 703 687 141.5
A 13 254 8731 56.87 703 687 141.5
B 10 245 612779 4589.24 700 684 133.4
B 7 220 100092 745.32 700 684 133.4
B 6 36 44486 328.41 700 684 133.4
C 14 238 103708 653.92 671 678 157.6
C 3 233 36373 226.55 671 678 157.6
C 5 112 28490 176.52 671 678 157.6
D 1 20 192948 1152.76 676 658 166.8
D 14 34 37650 221.76 676 658 166.8
D 1 52 29861 175.07 676 658 166.8

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