ASTROSAT CZTI

Data Quality Report

Orbit 20181111_A05_004T06_9000002506_level2

Creation date: 2018-11-15T19:50:05.366038
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/AS1A05_004T06_9000002506cztM0_level2_bc.evt modeM0/AS1A05_004T06_9000002506cztM0_level2_quad_clean.evt
Size (bytes)3,405,847,680785,183,040
Size3.2 GB 748.8 MB
Events in quadrant A23,375,8634,941,998
Events in quadrant B15,938,2265,235,591
Events in quadrant C12,721,5075,053,258
Events in quadrant D46,740,1984,145,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013080
B013080
C013080
D013080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01846130
B01428240
C01322500
D02844310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412063549.909545%
B6412111161.740459%
C641217841.222688%
D641201728626.958827%

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 78425 64127 143 143 0.18% 0.22%
B 78425 64123 46 46 0.06% 0.07%
C 78425 64125 2 2 0.00% 0.00%
D 78425 64119 1785 1785 2.28% 2.78%

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 15 174 10813884 15508.97 3203 3139 697.1
A 0 23 75712 104.11 3203 3139 697.1
A 15 190 71980 98.76 3203 3139 697.1
B 15 35 882202 1406.16 3357 3271 625.1
B 10 16 880377 1403.24 3357 3271 625.1
B 0 219 295629 467.73 3357 3271 625.1
C 3 233 213994 280.19 3224 3209 752.3
C 5 112 65259 82.48 3224 3209 752.3
C 7 247 24595 28.43 3224 3209 752.3
D 1 52 34275943 52225.91 2834 2737 656.2
D 10 70 551188 835.74 2834 2737 656.2
D 12 32 423319 640.89 2834 2737 656.2

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