ASTROSAT CZTI

Data Quality Report

Orbit 20180510_G08_068T01_9000002090_level2

Creation date: 2018-05-12T12:37:06.825988
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_068T01_9000002090cztM0_level2_bc.evt modeM0/AS1G08_068T01_9000002090cztM0_level2_quad_clean.evt
Size (bytes)892,958,400271,160,640
Size851.6 MB 258.6 MB
Events in quadrant A4,786,3331,683,810
Events in quadrant B5,355,1981,762,512
Events in quadrant C5,767,1271,629,285
Events in quadrant D9,545,7381,537,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0474670
B0492370
C0486760
D0653070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232361310.563780%
B232361640.705801%
C23236920.395937%
D2323617597.570150%

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 28742 23238 2 2 0.01% 0.01%
B 28742 23238 4 4 0.01% 0.02%
C 28742 23238 0 0 0.00% 0.00%
D 28742 23232 198 198 0.69% 0.85%

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 84314 317.18 1190 1166 262.2
A 12 189 61035 228.38 1190 1166 262.2
A 12 96 49231 183.35 1190 1166 262.2
B 0 85 170334 715.46 1214 1178 236.4
B 0 189 147388 618.41 1214 1178 236.4
B 3 209 143950 603.87 1214 1178 236.4
C 3 233 1251530 4859.34 1152 1139 257.3
C 10 22 9769 33.54 1152 1139 257.3
C 13 61 6560 21.07 1152 1139 257.3
D 10 157 2842720 10896.75 1113 1083 260.8
D 1 52 966074 3700.42 1113 1083 260.8
D 12 110 430370 1646.17 1113 1083 260.8

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