ASTROSAT CZTI

Data Quality Report

Orbit 20180226_G08_068T01_9000001922_level2

Creation date: 2018-11-03T16:26:21.685667
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/AS1G08_068T01_9000001922cztM0_level2_bc.evt modeM0/AS1G08_068T01_9000001922cztM0_level2_quad_clean.evt
Size (bytes)2,021,688,000505,117,440
Size1.9 GB 481.7 MB
Events in quadrant A9,063,7643,333,542
Events in quadrant B18,074,1033,124,403
Events in quadrant C7,792,5953,374,662
Events in quadrant D23,626,2022,775,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07980
B07960
C07980
D07960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0838550
B01306820
C0802340
D01307620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A391486221.588842%
B39145718518.354835%
C391433250.830289%
D39140660316.870210%

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 51078 39205 3 3 0.01% 0.01%
B 51078 39163 450 450 0.88% 1.15%
C 51078 39193 5 5 0.01% 0.01%
D 51078 39196 4898 4898 9.59% 12.50%

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 12 189 710110 1629.11 1978 1938 434.7
A 8 15 159570 362.62 1978 1938 434.7
A 5 16 127014 287.73 1978 1938 434.7
B 4 239 7419388 21600.59 1795 1746 343.4
B 0 85 2254407 6559.87 1795 1746 343.4
B 3 64 477182 1384.5 1795 1746 343.4
C 8 128 26577 56.61 1967 1945 435.1
C 7 221 18327 37.65 1967 1945 435.1
C 8 112 15944 32.17 1967 1945 435.1
D 1 52 15514614 37361.93 1769 1705 415.2
D 8 195 441723 1059.76 1769 1705 415.2
D 7 223 320056 766.73 1769 1705 415.2

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