ASTROSAT CZTI

Data Quality Report

Orbit 20170830_G07_068T01_9000001502_level2

Creation date: 2017-10-18T10:31:41.513868
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/AS1G07_068T01_9000001502cztM0_level2.evt modeM0/AS1G07_068T01_9000001502cztM0_level2_quad_clean.evt
Size (bytes)1,102,639,680191,491,200
Size1.0 GB 182.6 MB
Events in quadrant A7,036,6231,199,372
Events in quadrant B8,491,8101,186,991
Events in quadrant C7,006,7081,207,467
Events in quadrant D9,843,1471,170,769

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313420
B0348300
C0315490
D0390680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02750
C02760
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151553772.487628%
B149806714.479306%
C151622921.925867%
D152524122.701285%

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 17850 16176 0 0 0.00% 0.00%
B 17850 16079 177 177 0.99% 1.10%
C 17850 16200 7 7 0.04% 0.04%
D 17848 16068 83 83 0.47% 0.52%

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 1 162 19105 46.87 1810 1764 370.0
A 0 226 16470 39.75 1810 1764 370.0
A 12 194 14938 35.61 1810 1764 370.0
B 4 239 1022126 2974.96 1788 1746 343.0
B 11 51 143292 412.68 1788 1746 343.0
B 0 219 126728 364.39 1788 1746 343.0
C 14 234 76658 181.78 1773 1783 411.9
C 13 61 13316 28.0 1773 1783 411.9
C 14 67 8194 15.56 1773 1783 411.9
D 8 195 1358056 3207.63 1771 1722 422.8
D 1 20 775856 1830.77 1771 1722 422.8
D 1 52 462171 1088.93 1771 1722 422.8

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