ASTROSAT CZTI

Data Quality Report

Orbit 20180628_G08_044T01_9000002196_level2

Creation date: 2018-06-29T15:19:47.576440
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_044T01_9000002196cztM0_level2_bc.evt modeM0/AS1G08_044T01_9000002196cztM0_level2_quad_clean.evt
Size (bytes)620,585,280218,278,080
Size591.8 MB 208.2 MB
Events in quadrant A3,663,7941,405,499
Events in quadrant B3,770,7531,402,662
Events in quadrant C3,694,1941,342,102
Events in quadrant D6,531,8951,320,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349980
B0353360
C0344480
D0447850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165352121.282129%
B165352811.699425%
C165351671.009979%
D165359315.630481%

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 17771 16538 22 22 0.12% 0.13%
B 17771 16536 11 11 0.06% 0.07%
C 17771 16536 0 0 0.00% 0.00%
D 17771 16535 280 280 1.58% 1.69%

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 200519 1037.83 851 830 192.4
A 15 239 180515 933.86 851 830 192.4
A 3 1 7617 35.27 851 830 192.4
B 0 219 214925 1264.49 849 824 169.3
B 5 96 57050 332.07 849 824 169.3
B 0 189 54477 316.88 849 824 169.3
C 3 233 460914 2526.19 816 804 182.1
C 9 54 18273 95.91 816 804 182.1
C 3 232 11064 56.33 816 804 182.1
D 13 104 2664190 14210.26 804 781 187.4
D 7 254 734794 3916.23 804 781 187.4
D 2 234 58792 309.51 804 781 187.4

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