ASTROSAT CZTI

Data Quality Report

Orbit 20210212_A10_094T18_9000004174_level2

Creation date: 2021-02-13T10:33:44.712820
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/AS1A10_094T18_9000004174cztM0_level2_bc.evt modeM0/AS1A10_094T18_9000004174cztM0_level2_quad_clean.evt
Size (bytes)232,027,200100,370,880
Size221.3 MB 95.7 MB
Events in quadrant A1,107,962706,574
Events in quadrant B1,224,475709,618
Events in quadrant C1,042,195660,731
Events in quadrant D3,313,908621,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103720
B0107730
C0102300
D0177440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4859480.987858%
B4859841.728751%
C4859661.358304%
D48594499.240584%

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 5979 4857 0 0 0.00% 0.00%
B 5979 4857 1 1 0.02% 0.02%
C 5980 4858 0 0 0.00% 0.00%
D 5980 4859 99 99 1.66% 2.04%

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 13 254 9246 142.37 283 278 63.0
A 15 174 5871 88.79 283 278 63.0
A 13 6 5364 80.74 283 278 63.0
B 5 255 32171 575.87 283 278 55.4
B 10 246 28785 514.73 283 278 55.4
B 0 182 20840 371.27 283 278 55.4
C 2 16 18188 279.9 263 263 64.0
C 2 114 9796 148.86 263 263 64.0
C 3 233 2791 39.47 263 263 64.0
D 1 52 832829 13385.51 261 252 62.2
D 8 195 622651 10006.43 261 252 62.2
D 7 80 427823 6874.15 261 252 62.2

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