ASTROSAT CZTI

Data Quality Report

Orbit 20161212_G06_134T06_9000000878_level2

Creation date: 2017-09-22T12:22:50.721211
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/AS1G06_134T06_9000000878cztM0_level2.evt modeM0/AS1G06_134T06_9000000878cztM0_level2_quad_clean.evt
Size (bytes)738,797,760122,728,320
Size704.6 MB 117.0 MB
Events in quadrant A5,196,928761,049
Events in quadrant B5,055,777762,116
Events in quadrant C4,529,314758,656
Events in quadrant D6,902,783730,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02020
C02000
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222930
B0219530
C0209800
D0276340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101733183.125922%
B101883463.396152%
C101691401.376733%
D101799299.126633%

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 10281 10247 18 18 0.18% 0.18%
B 10281 10255 36 36 0.35% 0.35%
C 10281 10253 0 0 0.00% 0.00%
D 10281 10254 712 712 6.93% 6.94%

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 15 236 374780 1544.4 1176 1146 241.9
A 8 15 166712 684.36 1176 1146 241.9
A 14 111 96249 393.1 1176 1146 241.9
B 0 219 138910 610.66 1177 1149 225.6
B 15 85 68630 299.13 1177 1149 225.6
B 0 214 52786 228.89 1177 1149 225.6
C 8 128 21546 76.8 1144 1148 265.6
C 9 54 11612 39.39 1144 1148 265.6
C 8 112 10602 35.59 1144 1148 265.6
D 13 169 1901075 6854.21 1127 1091 277.2
D 12 233 195611 701.73 1127 1091 277.2
D 2 152 173175 620.79 1127 1091 277.2

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