ASTROSAT CZTI

Data Quality Report

Orbit 20160812_G05_192T01_9000000594_level2

Creation date: 2017-10-17T23:57:53.259609
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_192T01_9000000594cztM0_level2.evt modeM0/AS1G05_192T01_9000000594cztM0_level2_quad_clean.evt
Size (bytes)4,572,264,960625,656,960
Size4.3 GB 596.7 MB
Events in quadrant A21,650,6144,278,739
Events in quadrant B23,489,4784,449,960
Events in quadrant C53,616,8083,048,414
Events in quadrant D36,529,4313,920,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09920
B09920
C09920
D09930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0984150
B01025280
C01918300
D01423310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0930
B0930
C0930
D0940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A473955381.135141%
B473977671.618246%
C471881103923.393659%
D47139486710.324784%

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 61647 47833 100 100 0.16% 0.21%
B 61647 47838 176 176 0.29% 0.37%
C 61647 47386 8965 8965 14.54% 18.92%
D 61647 47322 3845 3845 6.24% 8.13%

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 0 118 363450 327.54 5446 5335 1093.3
A 15 254 124174 108.69 5446 5335 1093.3
A 8 15 100844 87.35 5446 5335 1093.3
B 10 16 868007 827.61 5517 5386 1042.3
B 14 167 769415 733.02 5517 5386 1042.3
B 4 80 254510 239.01 5517 5386 1042.3
C 14 48 34510676 32555.37 4628 4650 1059.9
C 8 208 943005 885.31 4628 4650 1059.9
C 12 4 47994 40.89 4628 4650 1059.9
D 13 53 7265911 6018.39 5031 4880 1206.5
D 1 31 3612941 2990.58 5031 4880 1206.5
D 13 235 3117899 2580.26 5031 4880 1206.5

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