ASTROSAT CZTI

Data Quality Report

Orbit 20191003_A07_039T01_9000003216_level2

Creation date: 2019-10-05T08:53:43.189642
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_039T01_9000003216cztM0_level2_bc.evt modeM0/AS1A07_039T01_9000003216cztM0_level2_quad_clean.evt
Size (bytes)1,766,367,360890,616,960
Size1.6 GB 849.4 MB
Events in quadrant A9,616,9085,956,923
Events in quadrant B11,423,3456,112,174
Events in quadrant C14,308,0775,943,558
Events in quadrant D14,953,8235,752,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0967050
B01019700
C01117890
D01138160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09560
B09560
C09560
D09560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A467977731.651815%
B4679710182.175353%
C4679718263.901960%
D4679716093.438255%

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 52692 46796 12 12 0.02% 0.03%
B 52692 46798 75 75 0.14% 0.16%
C 52692 46796 43 43 0.08% 0.09%
D 52692 46796 205 205 0.39% 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 15 236 268630 510.19 2389 2345 521.9
A 10 253 76814 142.68 2389 2345 521.9
A 13 254 76514 142.1 2389 2345 521.9
B 3 64 1081047 2330.96 2439 2382 462.8
B 0 230 271901 582.42 2439 2382 462.8
B 0 197 170321 362.91 2439 2382 462.8
C 8 208 5125625 9085.06 2366 2353 563.9
C 10 23 37144 61.69 2366 2353 563.9
C 8 128 25175 40.47 2366 2353 563.9
D 1 52 1767465 3180.98 2386 2312 554.9
D 13 153 1300802 2340.01 2386 2312 554.9
D 12 235 1041619 1872.93 2386 2312 554.9

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