ASTROSAT CZTI

Data Quality Report

Orbit 20170709_G07_028T01_9000001370_level2

Creation date: 2017-09-24T10:06:52.738256
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/AS1G07_028T01_9000001370cztM0_level2.evt modeM0/AS1G07_028T01_9000001370cztM0_level2_quad_clean.evt
Size (bytes)1,081,186,560198,057,600
Size1.0 GB 188.9 MB
Events in quadrant A8,271,9631,337,449
Events in quadrant B8,345,4441,344,201
Events in quadrant C5,818,451937,651
Events in quadrant D9,221,4821,274,475

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362400
B0362790
C0255410
D0390010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0110
C0130
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03600
C03440
D03520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172535102.956008%
B172075873.411402%
C120654493.721508%
D171025002.923635%

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 21655 19240 1 1 0.00% 0.01%
B 21655 19154 13 13 0.06% 0.07%
C 15493 13632 0 0 0.00% 0.00%
D 21655 19049 47 47 0.22% 0.25%

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 1 162 45291 99.59 2123 2076 433.9
A 14 111 26313 55.85 2123 2076 433.9
A 0 226 19274 39.63 2123 2076 433.9
B 10 252 52946 124.66 2114 2059 408.2
B 12 111 48627 114.08 2114 2059 408.2
B 15 85 40788 94.87 2114 2059 408.2
C 4 254 44026 123.43 1470 1479 344.7
C 14 234 21510 58.11 1470 1479 344.7
C 8 128 11795 29.93 1470 1479 344.7
D 1 52 415579 831.04 2043 1995 497.7
D 7 46 389555 778.74 2043 1995 497.7
D 10 199 339286 677.74 2043 1995 497.7

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