ASTROSAT CZTI

Data Quality Report

Orbit 20160103_G02_034T01_9000000240_level2

Creation date: 2017-10-27T00:22:42.066238
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/AS1G02_034T01_9000000240cztM0_level2.evt modeM0/AS1G02_034T01_9000000240cztM0_level2_quad_clean.evt
Size (bytes)16,743,493,4401,292,618,880
Size15.6 GB 1.2 GB
Events in quadrant A124,332,5278,094,949
Events in quadrant B136,181,6018,207,917
Events in quadrant C123,253,5588,048,756
Events in quadrant D116,559,6457,764,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04424560
B04770910
C04390360
D04196540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020880
B020880
C020880
D020880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1026775610.546374%
B1026747650.745077%
C1026795590.544415%
D10267412051.173617%

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 120732 102694 4342 4342 3.60% 4.23%
B 120732 102692 7053 7053 5.84% 6.87%
C 120732 102694 3828 3828 3.17% 3.73%
D 120732 102694 4787 4787 3.96% 4.66%

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 15 127 1337453 170.27 31684 31912 7667.7
A 4 32 1109008 140.47 31684 31912 7667.7
A 11 79 132686 13.14 31684 31912 7667.7
B 8 4 5448305 703.92 32915 33151 7692.9
B 6 53 1659584 211.42 32915 33151 7692.9
B 12 52 1216915 153.88 32915 33151 7692.9
C 15 241 4909678 586.18 29926 31012 8322.8
C 14 223 745825 85.89 29926 31012 8322.8
C 3 111 353865 38.79 29926 31012 8322.8
D 9 53 4990056 548.17 28991 30102 9048.2
D 5 190 1105686 118.87 28991 30102 9048.2
D 10 125 590656 61.95 28991 30102 9048.2

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