ASTROSAT CZTI

Data Quality Report

Orbit 26813

Creation date: 2024-06-27T19:33:15.452748
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/AS1A09_079T01_9000003864_26813cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26813cztM0_level2_quad_clean.evt
Size (bytes)938,427,84089,196,480
Size895.0 MB 85.1 MB
Events in quadrant A4,607,555629,278
Events in quadrant B15,039,610363,661
Events in quadrant C3,249,268632,531
Events in quadrant D5,073,895608,676

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181520
B0492470
C0139930
D0196660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66761892.831037%
B6676529879.358898%
C66771281.917029%
D66773224.822525%

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 7016 6677 56 56 0.80% 0.84%
B 7015 6675 4857 4857 69.24% 72.76%
C 7017 6678 15 15 0.21% 0.22%
D 7017 6678 207 207 2.95% 3.10%

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 13 1534060 9666.78 793 774 158.6
A 13 254 10575 61.79 793 774 158.6
A 6 16 8577 49.19 793 774 158.6
B 0 189 13220041 163130.9 423 412 81.0
B 3 64 104514 1284.62 423 412 81.0
B 10 246 19607 236.87 423 412 81.0
C 14 238 124165 685.37 768 771 180.0
C 15 208 120702 666.14 768 771 180.0
C 3 233 9087 46.19 768 771 180.0
D 1 52 1445297 7791.22 767 746 185.4
D 2 250 497107 2677.13 767 746 185.4
D 7 80 136147 730.29 767 746 185.4

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