ASTROSAT CZTI

Data Quality Report

Orbit 20160906_G05_105T01_9000000644_level2

Creation date: 2017-10-18T02:10:17.227637
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/AS1G05_105T01_9000000644cztM0_level2.evt modeM0/AS1G05_105T01_9000000644cztM0_level2_quad_clean.evt
Size (bytes)5,659,202,8801,073,747,520
Size5.3 GB 1.0 GB
Events in quadrant A32,664,7096,214,915
Events in quadrant B38,836,0908,255,892
Events in quadrant C31,017,7617,873,029
Events in quadrant D64,057,1895,282,567

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014690
B014710
C014690
D014700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01481700
B01637560
C01452900
D02409590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B12513186377920
C12513186377920
D12513186377920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A712229671.357727%
B7119925623.598365%
C712216760.949158%
D717401165116.240591%

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 84463 71398 121 121 0.14% 0.17%
B 84463 71352 1332 1332 1.58% 1.87%
C 84463 71394 1 1 0.00% 0.00%
D 84079 71762 8920 8920 10.61% 12.43%

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 13 251 544769 326.4 8178 7996 1644.5
A 0 50 419799 250.41 8178 7996 1644.5
A 15 174 166564 96.42 8178 7996 1644.5
B 10 16 4475942 2928.01 8148 7955 1525.9
B 4 80 1242611 809.11 8148 7955 1525.9
B 15 204 729317 472.73 8148 7955 1525.9
C 12 4 93669 47.43 7894 7912 1808.2
C 13 61 64503 31.3 7894 7912 1808.2
C 1 16 57105 27.21 7894 7912 1808.2
D 12 22 12287044 6956.5 7327 7112 1765.2
D 13 235 9998730 5660.18 7327 7112 1765.2
D 13 239 9038957 5116.48 7327 7112 1765.2

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