ASTROSAT CZTI

Data Quality Report

Orbit 20170618_G07_002T01_9000001316_level2

Creation date: 2017-09-24T06:01:50.241600
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/AS1G07_002T01_9000001316cztM0_level2.evt modeM0/AS1G07_002T01_9000001316cztM0_level2_quad_clean.evt
Size (bytes)2,952,247,680512,784,000
Size2.7 GB 489.0 MB
Events in quadrant A24,765,0563,210,298
Events in quadrant B19,487,9513,275,119
Events in quadrant C18,210,9903,239,925
Events in quadrant D24,267,6343,081,246

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08100
B08000
C08080
D08120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0540
C0550
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0995160
B0841880
C0817180
D0995370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3958312443.142763%
B397048262.080395%
C397485411.361075%
D3967220745.227869%

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 45990 40133 237 237 0.52% 0.59%
B 45990 40187 62 62 0.13% 0.15%
C 45990 40232 1 1 0.00% 0.00%
D 45990 40185 1140 1140 2.48% 2.84%

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 5739705 6029.82 4720 4619 951.1
A 1 162 334675 347.02 4720 4619 951.1
A 5 16 151273 154.19 4720 4619 951.1
B 10 245 598791 653.77 4763 4635 908.8
B 0 219 179020 191.88 4763 4635 908.8
B 12 111 105192 110.65 4763 4635 908.8
C 13 61 34892 28.1 4653 4673 1075.3
C 8 222 25274 19.16 4653 4673 1075.3
C 9 68 21972 16.09 4653 4673 1075.3
D 12 227 3032398 2736.34 4537 4420 1106.6
D 1 52 2290094 2065.53 4537 4420 1106.6
D 10 172 967539 870.36 4537 4420 1106.6

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