ASTROSAT CZTI

Data Quality Report

Orbit 20180314_G08_023T01_9000001978_level2

Creation date: 2018-07-02T16:06:08.335945
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/AS1G08_023T01_9000001978cztM0_level2_bc.evt modeM0/AS1G08_023T01_9000001978cztM0_level2_quad_clean.evt
Size (bytes)2,792,116,8001,130,402,880
Size2.6 GB 1.1 GB
Events in quadrant A19,084,0277,236,894
Events in quadrant B19,165,4137,420,053
Events in quadrant C16,889,7507,204,633
Events in quadrant D23,876,5976,802,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01768800
B01766790
C01694110
D01933070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016580
B016580
C016580
D016580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8132714841.824732%
B8132715601.918182%
C813278391.031638%
D8132725363.118276%

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 94018 81332 120 120 0.13% 0.15%
B 94018 81331 50 50 0.05% 0.06%
C 94018 81330 20 20 0.02% 0.02%
D 94018 81329 227 227 0.24% 0.28%

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 15 2032830 2240.63 4149 4059 905.4
A 9 143 783817 861.19 4149 4059 905.4
A 1 162 217080 235.27 4149 4059 905.4
B 3 64 1600243 1997.9 4251 4147 798.9
B 4 142 206378 253.14 4251 4147 798.9
B 3 209 200195 245.4 4251 4147 798.9
C 6 96 606364 665.45 4108 4059 905.1
C 15 208 115448 123.07 4108 4059 905.1
C 3 233 51044 51.91 4108 4059 905.1
D 1 52 2880840 3079.32 4053 3914 934.3
D 5 222 2010179 2147.41 4053 3914 934.3
D 8 195 1028896 1097.09 4053 3914 934.3

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