ASTROSAT CZTI

Data Quality Report

Orbit 20170901_G07_066T01_9000001510_level2

Creation date: 2017-10-18T11:03:55.644218
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_066T01_9000001510cztM0_level2.evt modeM0/AS1G07_066T01_9000001510cztM0_level2_quad_clean.evt
Size (bytes)3,311,058,240512,000,640
Size3.1 GB 488.3 MB
Events in quadrant A29,577,1512,981,482
Events in quadrant B24,023,1273,280,679
Events in quadrant C17,938,1253,391,719
Events in quadrant D26,170,9303,234,865

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08450
B08490
C08490
D0610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01119640
B0973420
C0817350
D01038930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3621224536.773998%
B3895917874.586873%
C400332880.719406%
D400287771.941141%

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 47023 37624 1501 1501 3.19% 3.99%
B 47023 40633 946 946 2.01% 2.33%
C 47023 41575 20 20 0.04% 0.05%
D 47023 41118 389 389 0.83% 0.95%

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 13 251 12823578 15351.88 4119 4028 835.0
A 3 80 731555 871.24 4119 4028 835.0
A 15 174 97456 111.88 4119 4028 835.0
B 4 239 5720861 6745.3 4472 4352 847.5
B 4 81 254353 294.99 4472 4352 847.5
B 0 214 245949 285.08 4472 4352 847.5
C 14 234 126247 116.03 4554 4576 1048.7
C 13 61 34264 28.31 4554 4576 1048.7
C 14 67 26932 21.32 4554 4576 1048.7
D 8 195 3734837 3466.42 4485 4367 1076.2
D 1 20 1096137 1014.49 4485 4367 1076.2
D 5 222 1035633 958.27 4485 4367 1076.2

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