ASTROSAT CZTI

Data Quality Report

Orbit 20160118_G02_051T01_9000000278_level2

Creation date: 2017-10-27T02:59:43.408552
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/AS1G02_051T01_9000000278cztM0_level2.evt modeM0/AS1G02_051T01_9000000278cztM0_level2_quad_clean.evt
Size (bytes)9,881,910,720714,876,480
Size9.2 GB 681.8 MB
Events in quadrant A74,425,9514,383,626
Events in quadrant B79,019,3144,441,983
Events in quadrant C71,995,1294,373,664
Events in quadrant D69,784,1264,232,702

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02648760
B02784110
C02575600
D02513180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012500
B012500
C012500
D012500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A615465050.820524%
B615466140.997628%
C615453600.584938%
D615449091.476992%

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 71211 61551 2475 2475 3.48% 4.02%
B 71211 61552 3302 3302 4.64% 5.36%
C 71211 61552 1974 1974 2.77% 3.21%
D 71209 61549 2501 2501 3.51% 4.06%

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 14 96516 16.51 19406 19530 4662.9
A 8 255 71491 11.14 19406 19530 4662.9
A 8 15 55939 7.81 19406 19530 4662.9
B 7 205 1749275 367.66 20099 20208 4702.9
B 0 234 599877 123.26 20099 20208 4702.9
B 0 220 190211 36.15 20099 20208 4702.9
C 1 192 130561 21.83 18388 19065 5108.6
C 8 208 64965 8.98 18388 19065 5108.6
C 8 229 62773 8.56 18388 19065 5108.6
D 13 105 770632 145.58 18041 18477 5166.5
D 13 53 622608 116.93 18041 18477 5166.5
D 2 54 353726 64.89 18041 18477 5166.5

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