ASTROSAT CZTI

Data Quality Report

Orbit 20170519_A03_009T01_9000001234_level2

Creation date: 2017-09-23T23:21:41.867150
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/AS1A03_009T01_9000001234cztM0_level2.evt modeM0/AS1A03_009T01_9000001234cztM0_level2_quad_clean.evt
Size (bytes)1,999,339,200347,909,760
Size1.9 GB 331.8 MB
Events in quadrant A15,917,5122,167,773
Events in quadrant B13,619,2762,208,607
Events in quadrant C12,683,5832,143,859
Events in quadrant D16,398,1962,050,650

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05800
B05800
C05800
D05800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0657470
B0594590
C0578980
D0672890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A286124061.418985%
B286122860.999581%
C286111760.615148%
D286116402.236902%

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 32307 28614 151 151 0.47% 0.53%
B 32307 28614 57 57 0.18% 0.20%
C 32307 28614 0 0 0.00% 0.00%
D 32307 28612 437 437 1.35% 1.53%

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 5 2569728 3820.34 3320 3241 671.8
A 15 174 196410 287.54 3320 3241 671.8
A 5 16 166430 242.91 3320 3241 671.8
B 4 48 259371 405.98 3344 3256 630.9
B 10 16 164644 255.82 3344 3256 630.9
B 12 111 68030 102.68 3344 3256 630.9
C 14 67 24390 28.3 3244 3257 746.8
C 13 61 24341 28.23 3244 3257 746.8
C 1 3 10229 9.34 3244 3257 746.8
D 8 195 1352466 1728.41 3203 3121 780.7
D 13 105 1225934 1566.33 3203 3121 780.7
D 1 52 592224 754.6 3203 3121 780.7

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