ASTROSAT CZTI

Data Quality Report

Orbit 20200402_A07_001T01_9000003598_level2

Creation date: 2020-04-04T10:10:10.649365
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_001T01_9000003598cztM0_level2_bc.evt modeM0/AS1A07_001T01_9000003598cztM0_level2_quad_clean.evt
Size (bytes)489,432,960235,120,320
Size466.8 MB 224.2 MB
Events in quadrant A3,152,3891,571,912
Events in quadrant B3,322,4641,597,820
Events in quadrant C3,458,6191,486,102
Events in quadrant D3,890,7981,461,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302340
B0310750
C0313620
D0320010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14544590.405666%
B145441340.921342%
C145441270.873212%
D14544490.336909%

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 18099 14543 0 0 0.00% 0.00%
B 18099 14544 1 1 0.01% 0.01%
C 18099 14543 0 0 0.00% 0.00%
D 18099 14543 11 11 0.06% 0.08%

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 23435 126.59 817 805 178.8
A 0 226 5342 25.38 817 805 178.8
A 12 194 5001 23.47 817 805 178.8
B 15 33 115558 729.21 822 805 157.4
B 3 64 17052 103.24 822 805 157.4
B 0 229 12724 75.74 822 805 157.4
C 7 247 461882 2530.93 766 764 182.2
C 2 16 49407 266.99 766 764 182.2
C 3 233 5856 27.95 766 764 182.2
D 1 52 705436 3861.99 785 757 182.5
D 8 195 74069 401.78 785 757 182.5
D 2 234 65964 357.36 785 757 182.5

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