ASTROSAT CZTI

Data Quality Report

Orbit 20161126_G06_168T25_9000000830_level2

Creation date: 2017-09-19T07:04:52.230293
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_168T25_9000000830cztM0_level2.evt modeM0/AS1G06_168T25_9000000830cztM0_level2_quad_clean.evt
Size (bytes)954,322,560101,226,240
Size910.1 MB 96.5 MB
Events in quadrant A5,297,021649,815
Events in quadrant B5,298,925655,362
Events in quadrant C4,053,388666,631
Events in quadrant D13,645,102467,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215570
B0217220
C0183290
D0467580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89971501.667222%
B89973233.590086%
C8997190.211182%
D8997310134.467045%

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 9682 8998 29 29 0.30% 0.32%
B 9682 8998 199 199 2.06% 2.21%
C 9682 8999 0 0 0.00% 0.00%
D 9681 8996 2860 2860 29.54% 31.79%

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 762192 3478.17 1060 1036 218.8
A 13 251 220843 1004.43 1060 1036 218.8
A 15 236 131951 598.23 1060 1036 218.8
B 3 64 856259 4129.06 1062 1038 207.1
B 0 219 144979 694.96 1062 1038 207.1
B 4 81 126830 607.33 1062 1038 207.1
C 9 54 12952 50.01 1030 1035 238.3
C 13 61 8324 30.59 1030 1035 238.3
C 1 16 6731 23.9 1030 1035 238.3
D 2 63 8907246 40777.94 885 856 218.4
D 12 220 890394 4072.75 885 856 218.4
D 2 14 135118 614.72 885 856 218.4

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