ASTROSAT CZTI

Data Quality Report

Orbit 20180601_G08_083T01_9000002134_level2

Creation date: 2018-06-04T10:04:25.808223
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/AS1G08_083T01_9000002134cztM0_level2_bc.evt modeM0/AS1G08_083T01_9000002134cztM0_level2_quad_clean.evt
Size (bytes)1,589,676,480653,169,600
Size1.5 GB 622.9 MB
Events in quadrant A9,968,9614,207,543
Events in quadrant B10,966,1474,203,773
Events in quadrant C10,647,5644,170,059
Events in quadrant D13,373,6653,998,030

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09560
B09560
C09560
D09560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980250
B01009610
C0968240
D01109900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4668410932.341273%
B4668410092.161340%
C466846621.418045%
D4668416943.628652%

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 52206 46686 11 11 0.02% 0.02%
B 52206 46686 8 8 0.02% 0.02%
C 52206 46688 1 1 0.00% 0.00%
D 52206 46683 143 143 0.27% 0.31%

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 12 189 498389 951.61 2344 2294 521.3
A 14 111 346496 660.25 2344 2294 521.3
A 8 15 33099 59.09 2344 2294 521.3
B 0 189 404417 900.09 2364 2303 446.8
B 3 209 291561 647.47 2364 2303 446.8
B 15 222 275150 610.74 2364 2303 446.8
C 3 233 1233576 2382.3 2318 2290 516.8
C 0 207 281999 541.18 2318 2290 516.8
C 7 247 44363 81.4 2318 2290 516.8
D 2 120 1446098 2678.07 2280 2213 539.2
D 12 110 1164906 2156.52 2280 2213 539.2
D 10 199 644859 1191.96 2280 2213 539.2

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