ASTROSAT CZTI

Data Quality Report

Orbit 20180801_A04_049T01_9000002266_level2

Creation date: 2018-08-02T14:27:58.288476
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/AS1A04_049T01_9000002266cztM0_level2_bc.evt modeM0/AS1A04_049T01_9000002266cztM0_level2_quad_clean.evt
Size (bytes)706,861,440258,001,920
Size674.1 MB 246.0 MB
Events in quadrant A3,756,4181,678,546
Events in quadrant B3,962,9651,690,885
Events in quadrant C8,079,8391,654,936
Events in quadrant D4,434,3271,607,728

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365310
B0370100
C0494170
D0387880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171532031.183466%
B171532051.195126%
C171534812.804174%
D171533201.865563%

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 19929 17153 7 7 0.04% 0.04%
B 19929 17153 1 1 0.01% 0.01%
C 19929 17152 10 10 0.05% 0.06%
D 19929 17153 39 39 0.20% 0.23%

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 14 238 173023 900.94 865 847 191.1
A 14 237 103927 539.38 865 847 191.1
A 3 80 71342 368.88 865 847 191.1
B 8 3 156683 937.28 871 848 166.3
B 4 173 120762 721.23 871 848 166.3
B 10 245 83857 499.26 871 848 166.3
C 3 233 4774967 25524.25 841 830 187.0
C 5 96 10600 52.23 841 830 187.0
C 13 61 4879 21.65 841 830 187.0
D 2 33 408952 2013.18 857 827 202.7
D 1 255 181279 890.13 857 827 202.7
D 5 222 127649 625.58 857 827 202.7

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