ASTROSAT CZTI

Data Quality Report

Orbit 24641

Creation date: 2024-06-27T19:08:15.008105
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/AS1C05_012T06_9000003616_24641cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24641cztM0_level2_quad_clean.evt
Size (bytes)557,637,120143,579,520
Size531.8 MB 136.9 MB
Events in quadrant A3,652,442970,408
Events in quadrant B3,818,491982,512
Events in quadrant C4,423,864944,917
Events in quadrant D4,478,049922,538

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160452
B0165312
C0183012
D0185022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7595320.421330%
B75951061.395655%
C75951692.225148%
D75951542.027650%

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 7845 7596 1 1 0.01% 0.01%
B 7845 7596 30 30 0.38% 0.39%
C 7845 7596 1 1 0.01% 0.01%
D 7845 7595 116 116 1.48% 1.53%

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 6 16 128817 698.57 908 887 183.1
A 15 223 20155 105.21 908 887 183.1
A 13 254 12996 66.12 908 887 183.1
B 5 172 124953 711.48 906 881 174.4
B 0 190 118946 677.03 906 881 174.4
B 0 245 22381 123.29 906 881 174.4
C 7 247 752913 3672.19 879 885 204.8
C 14 238 139535 677.04 879 885 204.8
C 10 91 39339 187.77 879 885 204.8
D 8 195 676984 3185.37 875 850 212.3
D 7 238 239441 1124.04 875 850 212.3
D 1 52 150779 706.34 875 850 212.3

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