ASTROSAT CZTI

Data Quality Report

Orbit 20180830_T02_097T01_9000002340_level2

Creation date: 2018-08-31T16:36:23.860788
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/AS1T02_097T01_9000002340cztM0_level2_bc.evt modeM0/AS1T02_097T01_9000002340cztM0_level2_quad_clean.evt
Size (bytes)853,274,880311,135,040
Size813.7 MB 296.7 MB
Events in quadrant A6,472,1021,918,793
Events in quadrant B5,804,0722,003,927
Events in quadrant C5,334,3951,941,571
Events in quadrant D6,561,7551,879,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0566680
B0521910
C0510900
D0540540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04980
B04980
C04980
D04980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A244146332.592775%
B244141640.671746%
C244141970.806914%
D244142691.101827%

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 30815 24413 25 25 0.08% 0.10%
B 30815 24416 3 3 0.01% 0.01%
C 30815 24415 0 0 0.00% 0.00%
D 30815 24416 122 122 0.40% 0.50%

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 15 239 1290754 4507.5 1325 1303 286.1
A 14 254 26553 88.27 1325 1303 286.1
A 10 253 23424 77.33 1325 1303 286.1
B 4 173 164713 644.37 1368 1336 253.5
B 0 229 71994 278.68 1368 1336 253.5
B 0 219 55689 214.37 1368 1336 253.5
C 7 247 175171 574.72 1308 1305 302.5
C 15 127 56634 182.89 1308 1305 302.5
C 10 22 50490 162.58 1308 1305 302.5
D 7 223 1002093 3357.21 1313 1269 298.1
D 12 144 255318 852.19 1313 1269 298.1
D 2 234 96051 317.94 1313 1269 298.1

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