ASTROSAT CZTI

Data Quality Report

Orbit 20160806_G05_218T03_9000000582_level2

Creation date: 2019-11-04T12:13:38.447773
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_218T03_9000000582cztM0_level2_bc.evt modeM0/AS1G05_218T03_9000000582cztM0_level2_quad_clean.evt
Size (bytes)3,143,701,4401,173,283,200
Size2.9 GB 1.1 GB
Events in quadrant A19,383,3837,471,758
Events in quadrant B20,810,0627,645,829
Events in quadrant C17,352,0487,369,104
Events in quadrant D31,459,3746,812,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01510
B01510
C01510
D01520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018540
B018560
C018560
D018560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01925370
B01958850
C01871680
D02386140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9098012591.383821%
B9097715071.656463%
C909868770.963885%
D9097644504.891400%

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 106692 90993 36 36 0.03% 0.04%
B 106692 90987 57 57 0.05% 0.06%
C 106692 91004 8 8 0.01% 0.01%
D 106692 90987 422 422 0.40% 0.46%

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 7 16 1227586 1226.44 4417 4303 997.4
A 14 111 913865 911.91 4417 4303 997.4
A 8 15 119073 115.07 4417 4303 997.4
B 10 16 919623 1040.15 4502 4359 879.9
B 15 204 694029 783.77 4502 4359 879.9
B 14 167 617799 697.14 4502 4359 879.9
C 1 16 246378 251.98 4328 4252 960.9
C 8 128 40666 37.9 4328 4252 960.9
C 9 247 36782 33.85 4328 4252 960.9
D 13 235 5445933 5603.16 4208 4048 971.2
D 8 112 5341167 5495.29 4208 4048 971.2
D 2 63 919584 942.67 4208 4048 971.2

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