ASTROSAT CZTI

Data Quality Report

Orbit 20160118_G02_049T01_9000000280_level2

Creation date: 2018-05-16T20:06:32.871272
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_049T01_9000000280cztM0_level2.evt modeM0/AS1G02_049T01_9000000280cztM0_level2_quad_clean.evt
Size (bytes)21,757,472,6402,323,802,880
Size20.3 GB 2.2 GB
Events in quadrant A161,852,06415,543,184
Events in quadrant B183,923,37115,607,039
Events in quadrant C154,480,98215,138,934
Events in quadrant D149,771,27414,835,947

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05772500
B06424870
C05550450
D05413240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01930
C01960
D01940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028040
B028010
C027400
D027420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1359595010.368493%
B13595814921.097398%
C1346203420.254048%
D1346618090.600768%

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 183672 135986 4322 4322 2.35% 3.18%
B 183672 135994 10717 10717 5.83% 7.88%
C 183672 134661 3708 3708 2.02% 2.75%
D 183672 134700 4078 4078 2.22% 3.03%

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 5 911567 86.44 41920 42130 10058.8
A 8 14 375716 33.16 41920 42130 10058.8
A 8 15 228498 18.53 41920 42130 10058.8
B 8 3 17055128 1666.0 43463 43614 10211.0
B 0 234 1483910 141.05 43463 43614 10211.0
B 0 220 401159 35.02 43463 43614 10211.0
C 9 203 624398 53.4 39241 40574 10933.3
C 8 208 348686 28.18 39241 40574 10933.3
C 12 4 177124 12.49 39241 40574 10933.3
D 13 105 1451087 129.44 38886 39774 10902.9
D 1 84 1041201 91.85 38886 39774 10902.9
D 1 83 685850 59.26 38886 39774 10902.9

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