ASTROSAT CZTI

Data Quality Report

Orbit 20171015_G08_028T01_9000001618_level2

Creation date: 2017-10-18T13:52:46.543911
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_028T01_9000001618cztM0_level2.evt modeM0/AS1G08_028T01_9000001618cztM0_level2_quad_clean.evt
Size (bytes)2,671,021,440419,345,280
Size2.5 GB 399.9 MB
Events in quadrant A18,536,6222,631,090
Events in quadrant B21,585,6322,623,911
Events in quadrant C15,706,7272,613,160
Events in quadrant D22,724,3902,449,995

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07060
B07060
C07060
D07060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0776350
B0870370
C0712490
D0907120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A346765671.635137%
B3467615794.553582%
C346761560.449879%
D3467616174.663168%

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 37091 34682 35 35 0.09% 0.10%
B 37091 34682 617 617 1.66% 1.78%
C 37091 34682 1 1 0.00% 0.00%
D 37091 34682 1343 1343 3.62% 3.87%

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 2434680 2881.2 4146 4055 843.6
A 11 29 81737 92.08 4146 4055 843.6
A 0 226 37841 40.05 4146 4055 843.6
B 4 239 4475509 5710.14 4112 4003 783.1
B 15 204 362773 458.15 4112 4003 783.1
B 0 219 191037 238.84 4112 4003 783.1
C 13 61 29616 27.5 4012 4039 930.2
C 8 128 24630 22.14 4012 4039 930.2
C 14 234 17416 14.38 4012 4039 930.2
D 10 253 3209874 3389.92 3931 3819 945.8
D 1 52 2317622 2446.5 3931 3819 945.8
D 8 195 875154 921.3 3931 3819 945.8

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