ASTROSAT CZTI

Data Quality Report

Orbit 20170624_G07_044T09_9000001334_level2

Creation date: 2021-08-27T01:29:18.589851
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_044T09_9000001334cztM0_level2_bc.evt modeM0/AS1G07_044T09_9000001334cztM0_level2_quad_clean.evt
Size (bytes)2,456,948,1601,004,374,080
Size2.3 GB 957.8 MB
Events in quadrant A20,836,1706,301,133
Events in quadrant B15,228,3306,382,906
Events in quadrant C16,031,8636,394,718
Events in quadrant D17,206,6986,209,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01722030
B01557090
C01587800
D01600950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015260
B015240
C015240
D015220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7489112761.703810%
B749039311.242941%
C7490210111.349764%
D748829741.300713%

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 86390 74996 98 98 0.11% 0.13%
B 86390 74990 1 1 0.00% 0.00%
C 86390 74994 11 11 0.01% 0.01%
D 86390 74989 49 49 0.06% 0.07%

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 8 5 4950037 6084.64 3708 3642 812.9
A 4 2 445286 543.27 3708 3642 812.9
A 5 16 326760 397.47 3708 3642 812.9
B 0 214 314296 441.04 3747 3646 704.4
B 0 219 314118 440.79 3747 3646 704.4
B 0 187 80142 108.6 3747 3646 704.4
C 4 254 1408331 1725.64 3708 3649 814.0
C 10 22 56696 65.17 3708 3649 814.0
C 14 234 25431 26.76 3708 3649 814.0
D 1 52 910838 1060.51 3697 3590 855.5
D 8 195 536497 622.93 3697 3590 855.5
D 7 71 450082 521.92 3697 3590 855.5

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