ASTROSAT CZTI

Data Quality Report

Orbit 20170416_A03_062T01_9000001176_level2

Creation date: 2017-09-23T17:42:18.648121
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/AS1A03_062T01_9000001176cztM0_level2.evt modeM0/AS1A03_062T01_9000001176cztM0_level2_quad_clean.evt
Size (bytes)2,500,280,640436,668,480
Size2.3 GB 416.4 MB
Events in quadrant A18,033,7942,703,511
Events in quadrant B18,645,1492,754,981
Events in quadrant C17,261,0662,671,733
Events in quadrant D19,310,2112,582,326

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07480
C07480
D07480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0765050
B0780080
C0753210
D0819620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A365955251.434622%
B365954671.276131%
C365951910.521929%
D365954841.322585%

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 44925 36602 2 2 0.00% 0.01%
B 44925 36601 73 73 0.16% 0.20%
C 44925 36602 9 9 0.02% 0.02%
D 44925 36603 279 279 0.62% 0.76%

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 14 111 484990 527.09 4541 4451 911.7
A 15 236 63233 64.48 4541 4451 911.7
A 0 226 42339 41.56 4541 4451 911.7
B 4 48 473089 548.13 4554 4453 855.0
B 4 81 119097 134.09 4554 4453 855.0
B 0 214 112786 126.71 4554 4453 855.0
C 1 16 115678 110.37 4387 4413 1008.1
C 9 68 35926 31.26 4387 4413 1008.1
C 13 61 33499 28.85 4387 4413 1008.1
D 2 136 941373 901.07 4353 4251 1040.0
D 2 14 818750 783.17 4353 4251 1040.0
D 1 52 317756 301.45 4353 4251 1040.0

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