ASTROSAT CZTI

Data Quality Report

Orbit 20160628_G05_222T01_9000000520_level2

Creation date: 2017-10-27T00:59:27.933432
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/AS1G05_222T01_9000000520cztM0_level2.evt modeM0/AS1G05_222T01_9000000520cztM0_level2_quad_clean.evt
Size (bytes)9,692,928,0001,550,269,440
Size9.0 GB 1.4 GB
Events in quadrant A65,165,2479,639,066
Events in quadrant B70,983,6759,723,341
Events in quadrant C79,994,8399,375,256
Events in quadrant D68,545,8749,212,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02838830
B02975270
C03296760
D02997370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026740
B026780
C026780
D026810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13141827892.122236%
B13130438192.908518%
C13140191606.971028%
D13127936242.760533%

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 150466 132093 550 550 0.37% 0.42%
B 150466 132018 1364 1364 0.91% 1.03%
C 150465 132090 7729 7729 5.14% 5.85%
D 150466 132020 1834 1834 1.22% 1.39%

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 0 50 2768688 879.28 15386 15043 3131.7
A 0 199 1631250 516.08 15386 15043 3131.7
A 8 15 487515 150.87 15386 15043 3131.7
B 10 16 3839975 1284.84 15528 15170 2976.9
B 14 167 3343518 1118.07 15528 15170 2976.9
B 3 0 1047359 346.74 15528 15170 2976.9
C 12 204 19167494 5576.65 14790 14846 3434.4
C 9 144 2954313 855.88 14790 14846 3434.4
C 13 61 122124 31.24 14790 14846 3434.4
D 2 232 4744177 1290.23 14961 14509 3665.7
D 10 172 2255682 611.38 14961 14509 3665.7
D 12 233 1409224 380.47 14961 14509 3665.7

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