ASTROSAT CZTI

Data Quality Report

Orbit 20170730_G07_016T01_9000001420_level2

Creation date: 2017-09-24T13:03:28.928496
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_016T01_9000001420cztM0_level2.evt modeM0/AS1G07_016T01_9000001420cztM0_level2_quad_clean.evt
Size (bytes)5,679,288,000953,383,680
Size5.3 GB 909.2 MB
Events in quadrant A37,124,2995,987,201
Events in quadrant B39,819,2506,033,624
Events in quadrant C34,574,3416,031,271
Events in quadrant D55,294,6795,552,689

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01628420
B01695140
C01576920
D02154010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01330
B01310
C01320
D01310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015780
B015920
C015620
D015740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7690611041.435519%
B7684114521.889616%
C769856860.891083%
D7656636214.729253%

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 92449 78432 50 50 0.05% 0.06%
B 92449 78352 379 379 0.41% 0.48%
C 92449 78452 3 3 0.00% 0.00%
D 92449 78220 2933 2933 3.17% 3.75%

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 15 239 740330 399.98 9044 8860 1828.8
A 8 15 571978 307.92 9044 8860 1828.8
A 15 174 370053 197.51 9044 8860 1828.8
B 4 81 1405193 817.94 9078 8870 1707.1
B 4 239 1328991 773.3 9078 8870 1707.1
B 0 214 630720 364.27 9078 8870 1707.1
C 8 208 110394 50.25 8797 8830 2021.1
C 13 61 66750 28.66 8797 8830 2021.1
C 7 247 56984 23.83 8797 8830 2021.1
D 2 16 5525627 2473.45 8535 8307 2230.6
D 8 195 4143893 1854.01 8535 8307 2230.6
D 10 253 3407034 1523.67 8535 8307 2230.6

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