ASTROSAT CZTI

Data Quality Report

Orbit 20171107_A04_024T04_9000001670_level2

Creation date: 2018-01-08T20:18:37.818991
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/AS1A04_024T04_9000001670cztM0_level2_bc.evt modeM0/AS1A04_024T04_9000001670cztM0_level2_quad_clean.evt
Size (bytes)3,368,620,8001,026,141,120
Size3.1 GB 978.6 MB
Events in quadrant A22,890,7986,556,940
Events in quadrant B31,661,1986,459,014
Events in quadrant C15,202,3066,598,701
Events in quadrant D27,076,5446,239,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01884170
B02252220
C01559930
D01952120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015480
B015480
C015480
D015480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7621824113.163295%
B7621866858.770894%
C762184470.586476%
D7621825183.303682%

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 87494 76220 101 101 0.12% 0.13%
B 87494 76219 281 281 0.32% 0.37%
C 87494 76223 2 2 0.00% 0.00%
D 87494 76219 459 459 0.52% 0.60%

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 5 7005900 8184.53 3906 3840 855.5
A 1 162 219423 251.99 3906 3840 855.5
A 13 251 176255 201.53 3906 3840 855.5
B 4 239 10202546 13855.02 3834 3743 736.1
B 3 64 3381667 4588.89 3834 3743 736.1
B 15 204 844434 1142.07 3834 3743 736.1
C 0 207 40332 42.85 3856 3825 851.9
C 12 4 30919 31.8 3856 3825 851.9
C 13 61 23669 23.29 3856 3825 851.9
D 1 52 3838951 4218.67 3859 3735 909.1
D 13 152 3784495 4158.77 3859 3735 909.1
D 10 253 803304 879.51 3859 3735 909.1

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