ASTROSAT CZTI

Data Quality Report

Orbit 20006

Creation date: 2024-06-27T18:09:59.352788
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/AS1A06_002T02_9000002982_20006cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_20006cztM0_level2_quad_clean.evt
Size (bytes)516,093,12093,476,160
Size492.2 MB 89.1 MB
Events in quadrant A3,827,203598,693
Events in quadrant B3,594,913610,749
Events in quadrant C3,530,834586,070
Events in quadrant D4,229,085575,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154802
B0149223
C0145262
D0169662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66051862.816048%
B66041382.089643%
C66041462.210781%
D66043996.041793%

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 7555 6606 92 92 1.22% 1.39%
B 7554 6605 17 17 0.23% 0.26%
C 7554 6605 3 3 0.04% 0.05%
D 7554 6605 222 222 2.94% 3.36%

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 14 238 402645 2379.51 841 824 168.9
A 14 254 165581 975.66 841 824 168.9
A 13 252 21552 122.75 841 824 168.9
B 7 220 142039 890.39 839 819 158.6
B 0 245 30382 186.39 839 819 158.6
B 4 171 29268 179.37 839 819 158.6
C 14 238 127827 673.76 815 822 188.5
C 0 207 121526 640.34 815 822 188.5
C 9 221 50831 265.3 815 822 188.5
D 1 52 635130 3240.02 811 788 195.8
D 12 218 404688 2063.0 811 788 195.8
D 12 250 29394 146.11 811 788 195.8

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