ASTROSAT CZTI

Data Quality Report

Orbit 20160114_G02_021T08_9000000272_level2

Creation date: 2017-10-26T23:33:21.804301
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_021T08_9000000272cztM0_level2.evt modeM0/AS1G02_021T08_9000000272cztM0_level2_quad_clean.evt
Size (bytes)5,262,937,920352,825,920
Size4.9 GB 336.5 MB
Events in quadrant A39,498,9332,109,271
Events in quadrant B41,939,4512,156,574
Events in quadrant C38,232,4302,121,076
Events in quadrant D37,573,0932,061,502

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06620
B06620
C06620
D06620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01404940
B01476280
C01367350
D01349400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A325741830.561798%
B325741670.512679%
C325742160.663106%
D325735331.636325%

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 53922 32581 1259 1259 2.33% 3.86%
B 53922 32583 1648 1648 3.06% 5.06%
C 53922 32582 1295 1295 2.40% 3.97%
D 53922 32581 1550 1550 2.87% 4.76%

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 14 127214 47.17 10256 10335 2477.7
A 12 133 109841 40.16 10256 10335 2477.7
A 15 106 34463 9.74 10256 10335 2477.7
B 8 3 938060 370.42 10617 10671 2503.6
B 0 234 671301 263.87 10617 10671 2503.6
B 0 182 47809 14.83 10617 10671 2503.6
C 8 229 654655 240.51 9612 9952 2680.6
C 1 192 42788 12.25 9612 9952 2680.6
C 14 234 35103 9.38 9612 9952 2680.6
D 13 53 1031966 372.82 9568 9759 2741.9
D 13 105 564188 202.21 9568 9759 2741.9
D 2 221 133100 44.98 9568 9759 2741.9

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