ASTROSAT CZTI

Data Quality Report

Orbit 16249

Creation date: 2024-06-27T17:19:56.277097
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/AS1T02_112T01_9000002390_16249cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16249cztM0_level2_quad_clean.evt
Size (bytes)550,952,64078,963,840
Size525.4 MB 75.3 MB
Events in quadrant A5,026,026457,775
Events in quadrant B4,215,601490,000
Events in quadrant C3,714,999485,598
Events in quadrant D3,260,345475,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195133
B0169702
C0154142
D0145392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69195948.585056%
B69191912.760515%
C6919690.997254%
D6919450.650383%

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 7860 6921 410 410 5.22% 5.92%
B 7860 6921 88 88 1.12% 1.27%
C 7860 6921 11 11 0.14% 0.16%
D 7860 6921 29 29 0.37% 0.42%

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 1822842 11238.58 798 782 162.1
A 9 143 121865 746.85 798 782 162.1
A 3 1 12982 75.25 798 782 162.1
B 3 64 615059 3861.43 830 810 159.1
B 4 216 68164 423.42 830 810 159.1
B 10 16 61759 383.15 830 810 159.1
C 3 233 267879 1430.65 799 804 186.7
C 0 207 208039 1110.1 799 804 186.7
C 14 238 121820 648.25 799 804 186.7
D 10 70 95333 484.77 804 780 195.0
D 1 52 61752 312.6 804 780 195.0
D 2 234 35458 177.79 804 780 195.0

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