ASTROSAT CZTI

Data Quality Report

Orbit 20170919_A03_053T01_9000001542_level2

Creation date: 2017-10-18T15:17:49.532487
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_053T01_9000001542cztM0_level2.evt modeM0/AS1A03_053T01_9000001542cztM0_level2_quad_clean.evt
Size (bytes)1,293,330,240191,445,120
Size1.2 GB 182.6 MB
Events in quadrant A7,350,1581,224,122
Events in quadrant B10,965,6561,192,333
Events in quadrant C7,045,3481,213,864
Events in quadrant D12,746,2501,083,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324930
B0428700
C0323250
D0485160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157153882.468979%
B1571711577.361456%
C157143312.106402%
D1571714239.053891%

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 16797 15719 1 1 0.01% 0.01%
B 16797 15718 534 534 3.18% 3.40%
C 16797 15719 3 3 0.02% 0.02%
D 16797 15718 1064 1064 6.33% 6.77%

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 61128 157.79 1856 1818 375.9
A 15 174 53047 136.29 1856 1818 375.9
A 14 254 21707 52.91 1856 1818 375.9
B 4 239 3131576 9001.34 1823 1781 347.7
B 4 81 290238 829.61 1823 1781 347.7
B 0 85 138026 391.84 1823 1781 347.7
C 14 234 22168 48.63 1799 1806 418.7
C 13 61 13545 28.03 1799 1806 418.7
C 8 222 6320 10.78 1799 1806 418.7
D 10 199 2912218 6918.45 1739 1687 420.7
D 2 16 1022007 2425.34 1739 1687 420.7
D 1 52 1016040 2411.16 1739 1687 420.7

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