ASTROSAT CZTI

Data Quality Report

Orbit 47202

Creation date: 2024-06-27T23:32:48.857734
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A13_019T01_9000006302_47202cztM0_level2.fits modeM0/AS1A13_019T01_9000006302_47202cztM0_level2_quad_clean.evt
Size (bytes)603,930,240108,198,720
Size576.0 MB 103.2 MB
Events in quadrant A10,802,975607,437
Events in quadrant B4,123,597759,002
Events in quadrant C3,276,821744,693
Events in quadrant D3,609,339677,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037122106
B01693961
C01470646
D01561387

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6993197528.242528%
B69943985.690592%
C69981692.414976%
D69952022.887777%

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 7725 7011 1293 1293 16.74% 18.44%
B 7726 7009 88 88 1.14% 1.26%
C 7727 7015 2 2 0.03% 0.03%
D 7727 7013 31 31 0.40% 0.44%

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 9 191 4052351 25336.14 765 748 159.9
A 10 83 3775106 23602.43 765 748 159.9
A 13 254 13118 77.35 765 748 159.9
B 15 201 273577 1720.54 807 781 158.6
B 0 190 193811 1217.45 807 781 158.6
B 5 172 169125 1061.76 807 781 158.6
C 14 254 57136 296.79 805 808 189.8
C 15 208 48227 249.85 805 808 189.8
C 14 67 14407 71.65 805 808 189.8
D 2 249 186155 920.35 805 780 201.4
D 5 171 85212 419.19 805 780 201.4
D 1 47 49090 239.85 805 780 201.4

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