ASTROSAT CZTI

Data Quality Report

Orbit 08747

Creation date: 2024-06-27T15:36:40.431889
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_013T02_9000001216_08747cztM0_level2.evt modeM0/AS1G07_013T02_9000001216_08747cztM0_level2_quad_clean.evt
Size (bytes)534,444,480102,484,800
Size509.7 MB 97.7 MB
Events in quadrant A3,613,774645,502
Events in quadrant B3,955,739654,461
Events in quadrant C3,399,412652,979
Events in quadrant D4,698,401619,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160652
B0169661
C0157151
D0192011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76331491.952050%
B76332853.733788%
C7633921.205293%
D76332933.838596%

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 7733 7634 24 24 0.31% 0.31%
B 7733 7633 76 76 0.98% 1.00%
C 7733 7633 5 5 0.06% 0.07%
D 7733 7634 169 169 2.19% 2.21%

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 13 251 132454 746.62 862 843 176.3
A 5 16 94484 531.22 862 843 176.3
A 4 2 45388 252.7 862 843 176.3
B 10 16 492916 3005.59 870 848 163.7
B 0 214 37454 223.59 870 848 163.7
B 4 48 21950 128.89 870 848 163.7
C 14 234 32289 160.08 851 853 196.4
C 1 16 21454 104.91 851 853 196.4
C 5 128 14207 68.0 851 853 196.4
D 1 52 1020797 5005.78 835 809 203.8
D 2 152 130603 636.99 835 809 203.8
D 7 71 78109 379.36 835 809 203.8

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