ASTROSAT CZTI

Data Quality Report

Orbit 20180614_G08_020T01_9000002168_level2

Creation date: 2018-06-15T13:12:52.591866
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_020T01_9000002168cztM0_level2_bc.evt modeM0/AS1G08_020T01_9000002168cztM0_level2_quad_clean.evt
Size (bytes)1,476,486,720601,076,160
Size1.4 GB 573.2 MB
Events in quadrant A9,489,9183,916,566
Events in quadrant B9,377,9233,901,179
Events in quadrant C12,649,4293,821,063
Events in quadrant D10,450,8853,802,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0872920
B0877920
C01007090
D0906080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08200
B08200
C08200
D08200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A402884421.097101%
B402885901.464456%
C402884691.164118%
D402888522.114774%

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 48799 40286 0 0 0.00% 0.00%
B 48799 40283 6 6 0.01% 0.01%
C 48799 40285 0 0 0.00% 0.00%
D 48799 40286 86 86 0.18% 0.21%

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 8 15 297314 607.33 2247 2208 485.9
A 1 162 212409 432.59 2247 2208 485.9
A 12 189 134929 273.14 2247 2208 485.9
B 10 246 134655 319.01 2250 2196 415.2
B 0 214 101586 239.37 2250 2196 415.2
B 0 205 82540 193.5 2250 2196 415.2
C 3 233 4038416 8503.87 2191 2171 474.6
C 3 234 23073 44.04 2191 2171 474.6
C 0 207 14462 25.9 2191 2171 474.6
D 10 199 865358 1679.92 2216 2151 513.8
D 5 222 438233 848.68 2216 2151 513.8
D 10 70 164212 315.39 2216 2151 513.8

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