ASTROSAT CZTI

Data Quality Report

Orbit 20171021_A04_042T01_9000001630_level2

Creation date: 2017-10-22T12:21:40.824877
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/AS1A04_042T01_9000001630cztM0_level2.evt modeM0/AS1A04_042T01_9000001630cztM0_level2_quad_clean.evt
Size (bytes)4,089,283,200467,467,200
Size3.8 GB 445.8 MB
Events in quadrant A35,659,6342,747,098
Events in quadrant B28,184,2642,925,770
Events in quadrant C18,927,0802,945,043
Events in quadrant D38,268,0282,669,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340700
B01111110
C0857530
D01427950

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08500
B08520
C08520
D08520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41729438310.503487%
B4177125486.099926%
C418043120.746340%
D4178226446.328084%

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 49127 41801 2491 2491 5.07% 5.96%
B 49127 41849 1138 1138 2.32% 2.72%
C 49127 41877 4 4 0.01% 0.01%
D 49127 41861 2411 2411 4.91% 5.76%

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 14 238 7549325 7815.39 4766 4659 965.4
A 8 15 5021347 5196.7 4766 4659 965.4
A 8 5 4392471 4545.26 4766 4659 965.4
B 4 239 5126227 5508.46 4909 4794 929.7
B 10 16 1515952 1625.36 4909 4794 929.7
B 15 204 543300 579.2 4909 4794 929.7
C 14 234 41736 33.02 4821 4835 1117.5
C 9 204 41328 32.66 4821 4835 1117.5
C 13 61 36224 28.09 4821 4835 1117.5
D 10 157 13889616 12141.34 4713 4573 1143.6
D 12 16 2813669 2456.33 4713 4573 1143.6
D 1 52 640059 555.68 4713 4573 1143.6

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