ASTROSAT CZTI

Data Quality Report

Orbit 12987

Creation date: 2024-06-27T16:34:47.964781
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/AS1G08_055T01_9000001912_12987cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12987cztM0_level2_quad_clean.evt
Size (bytes)651,360,96087,341,760
Size621.2 MB 83.3 MB
Events in quadrant A3,984,833541,522
Events in quadrant B6,150,360514,533
Events in quadrant C3,550,342545,008
Events in quadrant D5,525,042513,607

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166853
B0232822
C0158642
D0215292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76172042.678220%
B761793012.209531%
C76171281.680452%
D76173794.975712%

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 7918 7619 12 12 0.15% 0.16%
B 7918 7619 504 504 6.37% 6.62%
C 7918 7619 3 3 0.04% 0.04%
D 7918 7619 218 218 2.75% 2.86%

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 12 189 237470 1271.2 921 900 186.1
A 9 143 91428 486.45 921 900 186.1
A 1 162 53236 281.22 921 900 186.1
B 0 85 1646687 9681.87 886 861 170.0
B 3 64 677666 3981.43 886 861 170.0
B 4 239 187606 1098.56 886 861 170.0
C 14 234 15656 70.31 905 910 209.7
C 13 61 6538 26.83 905 910 209.7
C 0 207 3039 10.15 905 910 209.7
D 1 52 2120680 9897.41 893 867 214.2
D 2 234 33432 152.05 893 867 214.2
D 1 0 10123 43.22 893 867 214.2

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