ASTROSAT CZTI

Data Quality Report

Orbit 20161222_G06_145T01_9000000914_level2

Creation date: 2017-09-22T14:37:22.410099
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_145T01_9000000914cztM0_level2.evt modeM0/AS1G06_145T01_9000000914cztM0_level2_quad_clean.evt
Size (bytes)1,268,153,280213,284,160
Size1.2 GB 203.4 MB
Events in quadrant A6,970,3411,379,632
Events in quadrant B7,459,0561,416,096
Events in quadrant C6,672,3161,412,459
Events in quadrant D16,295,0261,218,514

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312790
B0323930
C0305350
D0588300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A149601240.828877%
B149601591.062834%
C14960520.347594%
D14960178311.918449%

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 17535 14962 28 28 0.16% 0.19%
B 17535 14962 28 28 0.16% 0.19%
C 17535 14962 0 0 0.00% 0.00%
D 17535 14962 1360 1360 7.76% 9.09%

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 14 111 174785 506.96 1714 1677 341.5
A 8 15 136834 395.82 1714 1677 341.5
A 4 2 28875 79.65 1714 1677 341.5
B 0 219 235010 726.11 1741 1699 321.3
B 4 48 112533 344.94 1741 1699 321.3
B 4 81 105107 321.82 1741 1699 321.3
C 13 61 13600 30.82 1699 1706 385.9
C 8 128 13259 29.94 1699 1706 385.9
C 12 4 9870 21.16 1699 1706 385.9
D 8 195 4980892 12810.47 1606 1558 388.7
D 2 33 3343830 8598.75 1606 1558 388.7
D 2 152 828134 2126.55 1606 1558 388.7

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