ASTROSAT CZTI

Data Quality Report

Orbit 20190708_A05_188T01_9000003018_level2

Creation date: 2019-07-10T10:40:44.224305
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/AS1A05_188T01_9000003018cztM0_level2_bc.evt modeM0/AS1A05_188T01_9000003018cztM0_level2_quad_clean.evt
Size (bytes)3,954,139,2001,379,692,800
Size3.7 GB 1.3 GB
Events in quadrant A22,768,8548,897,067
Events in quadrant B25,619,2208,994,606
Events in quadrant C21,853,6438,590,332
Events in quadrant D42,465,1508,217,036

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021100
B021100
C021100
D021100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02156410
B02251660
C02154060
D02784330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10346610931.056386%
B10346616221.567665%
C10346614691.419790%
D10346656995.508090%

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 122301 103461 5 5 0.00% 0.00%
B 122300 103462 28 28 0.02% 0.03%
C 122301 103465 4 4 0.00% 0.00%
D 122301 103468 2553 2553 2.09% 2.47%

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 5 16 294847 230.64 5825 5735 1253.5
A 13 254 77695 57.41 5825 5735 1253.5
A 12 96 42310 29.18 5825 5735 1253.5
B 10 245 2306708 2106.61 5855 5723 1092.3
B 0 189 178426 158.11 5855 5723 1092.3
B 0 219 177576 157.34 5855 5723 1092.3
C 3 247 193137 145.37 5566 5550 1290.4
C 3 233 152839 114.14 5566 5550 1290.4
C 9 221 39440 26.26 5566 5550 1290.4
D 2 16 9555310 7466.18 5596 5421 1279.1
D 1 52 7912250 6181.62 5596 5421 1279.1
D 13 153 2152642 1678.71 5596 5421 1279.1

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