ASTROSAT CZTI

Data Quality Report

Orbit 20191026_A07_047T08_9000003262_level2

Creation date: 2019-10-30T14:50:51.191435
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/AS1A07_047T08_9000003262cztM0_level2_bc.evt modeM0/AS1A07_047T08_9000003262cztM0_level2_quad_clean.evt
Size (bytes)352,656,000189,521,280
Size336.3 MB 180.7 MB
Events in quadrant A2,057,4981,296,054
Events in quadrant B2,209,8781,313,807
Events in quadrant C1,946,7371,255,800
Events in quadrant D3,796,6011,201,391

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201070
B0205820
C0201020
D0266610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97231061.090198%
B97231381.419315%
C97231151.182763%
D97235585.738969%

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 11358 9721 0 0 0.00% 0.00%
B 11358 9722 10 10 0.09% 0.10%
C 11358 9722 0 0 0.00% 0.00%
D 11358 9722 64 64 0.56% 0.66%

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 5 16 35182 297.56 519 510 116.5
A 13 254 14652 121.37 519 510 116.5
A 15 236 13033 107.47 519 510 116.5
B 3 64 62572 618.62 522 509 100.3
B 0 230 29627 290.24 522 509 100.3
B 0 197 25817 252.26 522 509 100.3
C 10 22 9365 73.91 499 497 120.0
C 3 233 8629 67.78 499 497 120.0
C 4 175 7275 56.49 499 497 120.0
D 12 233 481096 4049.92 500 484 118.7
D 11 176 395028 3324.66 500 484 118.7
D 5 222 278450 2342.3 500 484 118.7

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