ASTROSAT CZTI

Data Quality Report

Orbit 20161008_A02_081T01_9000000720_level2

Creation date: 2016-10-21T07:41:04.896533
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/AS1A02_081T01_9000000720cztM0_level2_bc.evt modeM0/AS1A02_081T01_9000000720cztM0_level2_quad_clean.evt
Size (bytes)2,571,376,320922,386,240
Size2.4 GB 879.7 MB
Events in quadrant A15,081,8625,874,728
Events in quadrant B19,477,3745,852,325
Events in quadrant C15,684,0915,656,849
Events in quadrant D22,392,9545,286,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01585610
B01725240
C01605240
D01816800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015640
B015640
C015620
D015620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A768227841.020541%
B7682513031.696062%
C768158551.113064%
D7682829303.813714%

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 88481 76840 5 5 0.01% 0.01%
B 88481 76843 46 46 0.05% 0.06%
C 88481 76843 59 59 0.07% 0.08%
D 88481 76825 554 554 0.63% 0.72%

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 7 16 128556 148.44 3780 3689 841.2
A 14 111 104973 120.41 3780 3689 841.2
A 13 14 96053 109.8 3780 3689 841.2
B 15 204 2014028 2690.45 3804 3679 747.2
B 10 16 536294 712.8 3804 3679 747.2
B 10 245 472508 627.43 3804 3679 747.2
C 9 16 1056977 1294.58 3669 3605 813.7
C 1 16 144129 172.7 3669 3605 813.7
C 12 4 48838 55.59 3669 3605 813.7
D 2 63 3603619 4156.14 3633 3481 866.2
D 2 152 1117510 1286.08 3633 3481 866.2
D 8 195 827755 951.57 3633 3481 866.2

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