ASTROSAT CZTI

Data Quality Report

Orbit 20161111_A02_028T03_9000000788_level2

Creation date: 2017-09-19T00:45:14.918537
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/AS1A02_028T03_9000000788cztM0_level2.evt modeM0/AS1A02_028T03_9000000788cztM0_level2_quad_clean.evt
Size (bytes)4,622,451,840823,645,440
Size4.3 GB 785.5 MB
Events in quadrant A31,389,4755,232,497
Events in quadrant B38,196,9285,131,171
Events in quadrant C29,206,7085,224,788
Events in quadrant D36,813,9874,902,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01378170
B01575890
C01335450
D01565540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013240
B013240
C013200
D013220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649698541.314473%
B6494131994.926010%
C649794840.744856%
D6493120203.110995%

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 73566 65140 134 134 0.18% 0.21%
B 73566 65144 1661 1661 2.26% 2.55%
C 73566 65149 46 46 0.06% 0.07%
D 73566 65132 1497 1497 2.03% 2.30%

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 8 15 1710037 1116.94 7533 7355 1524.4
A 0 31 335326 215.15 7533 7355 1524.4
A 14 111 170824 107.23 7533 7355 1524.4
B 3 64 7785787 5499.36 7480 7300 1414.4
B 4 81 409448 284.32 7480 7300 1414.4
B 0 219 279167 192.21 7480 7300 1414.4
C 9 54 274149 157.58 7374 7396 1692.8
C 1 16 134210 74.91 7374 7396 1692.8
C 13 61 58827 30.38 7374 7396 1692.8
D 11 241 6714204 3765.25 7289 7064 1781.3
D 13 169 1012506 564.43 7289 7064 1781.3
D 8 195 330149 181.37 7289 7064 1781.3

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