ASTROSAT CZTI

Data Quality Report

Orbit 20171202_G08_058T09_9000001744_level2

Creation date: 2018-01-09T09:01:31.938724
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_058T09_9000001744cztM0_level2_bc.evt modeM0/AS1G08_058T09_9000001744cztM0_level2_quad_clean.evt
Size (bytes)3,505,821,120969,949,440
Size3.3 GB 925.0 MB
Events in quadrant A22,034,8496,003,429
Events in quadrant B39,023,4385,811,316
Events in quadrant C16,299,4286,104,512
Events in quadrant D23,215,9795,816,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016720
B016720
C016720
D016720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01933380
B02512650
C01690700
D01922650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8228517312.103664%
B8228568438.316218%
C822856710.815458%
D8228520282.464605%

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 94046 82291 0 0 0.00% 0.00%
B 94046 82285 843 843 0.90% 1.02%
C 94046 82289 1 1 0.00% 0.00%
D 94046 82287 171 171 0.18% 0.21%

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 4822556 5340.7 4139 4050 902.2
A 1 162 756070 833.52 4139 4050 902.2
A 13 251 118188 126.51 4139 4050 902.2
B 10 16 10657191 13779.27 4082 3967 773.1
B 3 64 5368721 6938.97 4082 3967 773.1
B 4 239 4239013 5477.76 4082 3967 773.1
C 1 3 42849 42.67 4132 4081 908.5
C 7 238 33070 31.91 4132 4081 908.5
C 14 234 29078 27.51 4132 4081 908.5
D 1 52 2469056 2483.77 4102 3951 992.5
D 5 222 1139160 1143.8 4102 3951 992.5
D 9 85 979081 982.51 4102 3951 992.5

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