ASTROSAT CZTI

Data Quality Report

Orbit 20190108_T03_070T01_9000002632_level2

Creation date: 2019-01-09T12:47:29.303095
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/AS1T03_070T01_9000002632cztM0_level2_bc.evt modeM0/AS1T03_070T01_9000002632cztM0_level2_quad_clean.evt
Size (bytes)317,563,200125,683,200
Size302.9 MB 119.9 MB
Events in quadrant A2,016,183789,909
Events in quadrant B2,263,535795,111
Events in quadrant C1,916,182770,889
Events in quadrant D2,735,445761,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210290
B0216740
C0206320
D0231430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99463963.981500%
B99464224.242912%
C99463723.740197%
D99464254.273075%

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 10346 9946 2 2 0.02% 0.02%
B 10346 9947 8 8 0.08% 0.08%
C 10346 9948 0 0 0.00% 0.00%
D 10346 9947 22 22 0.21% 0.22%

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 126166 1145.76 482 469 109.7
A 14 237 34543 310.59 482 469 109.7
A 15 31 5521 46.05 482 469 109.7
B 7 220 112232 1164.4 486 472 96.0
B 0 219 79385 822.17 486 472 96.0
B 10 245 72332 748.69 486 472 96.0
C 5 218 38659 335.95 470 465 113.7
C 3 233 38313 332.91 470 465 113.7
C 8 128 10690 89.94 470 465 113.7
D 7 223 341494 2749.23 475 460 124.0
D 1 52 283150 2278.89 475 460 124.0
D 10 70 117366 942.43 475 460 124.0

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