ASTROSAT CZTI

Data Quality Report

Orbit 20161117_A02_006T01_9000000802_level2

Creation date: 2017-09-19T02:57:16.792457
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_006T01_9000000802cztM0_level2.evt modeM0/AS1A02_006T01_9000000802cztM0_level2_quad_clean.evt
Size (bytes)2,932,511,040659,701,440
Size2.7 GB 629.1 MB
Events in quadrant A21,595,6614,272,250
Events in quadrant B22,699,8454,331,472
Events in quadrant C20,621,8014,232,024
Events in quadrant D20,874,2234,080,655

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0990
B0980
C01000
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09220
B09250
C09040
D09200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0943860
B0973940
C0931700
D0948780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A446525501.231748%
B445697531.689515%
C446673890.870889%
D446555211.166723%

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 59499 46146 31 31 0.05% 0.07%
B 59521 46075 179 179 0.30% 0.39%
C 59488 46182 40 40 0.07% 0.09%
D 59489 46139 134 134 0.23% 0.29%

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 1036127 980.2 5241 5139 1051.8
A 4 2 158560 145.86 5241 5139 1051.8
A 13 251 124098 113.1 5241 5139 1051.8
B 3 64 1185873 1187.28 5284 5157 994.5
B 0 219 638278 636.64 5284 5157 994.5
B 4 81 166629 162.37 5284 5157 994.5
C 12 16 379549 321.08 5093 5131 1166.1
C 1 16 276100 232.37 5093 5131 1166.1
C 9 16 43981 33.32 5093 5131 1166.1
D 13 169 525267 422.41 5071 4917 1231.8
D 5 97 260861 207.77 5071 4917 1231.8
D 8 195 219504 174.2 5071 4917 1231.8

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