ASTROSAT CZTI

Data Quality Report

Orbit 20181011_A05_069T03_9000002426_level2

Creation date: 2018-10-13T10:22:49.320893
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_069T03_9000002426cztM0_level2_bc.evt modeM0/AS1A05_069T03_9000002426cztM0_level2_quad_clean.evt
Size (bytes)2,334,830,400849,274,560
Size2.2 GB 809.9 MB
Events in quadrant A15,358,1815,327,819
Events in quadrant B17,412,0815,455,759
Events in quadrant C15,154,2555,189,944
Events in quadrant D18,050,3684,987,552

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01479140
B01564690
C01479810
D01563500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014160
B014160
C014160
D014160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6944813791.985658%
B6944814082.027416%
C6944813161.894943%
D6944814072.025976%

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 80699 69445 29 29 0.04% 0.04%
B 80699 69445 7 7 0.01% 0.01%
C 80699 69442 3 3 0.00% 0.00%
D 80699 69442 136 136 0.17% 0.20%

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 15 174 1247532 1619.22 3572 3502 768.3
A 15 223 261617 335.96 3572 3502 768.3
A 15 239 92420 115.73 3572 3502 768.3
B 15 35 1279514 1868.03 3641 3546 683.1
B 0 198 462925 672.53 3641 3546 683.1
B 0 189 445224 646.62 3641 3546 683.1
C 3 233 1287383 1581.4 3469 3448 811.9
C 7 247 269976 328.28 3469 3448 811.9
C 3 9 198935 240.78 3469 3448 811.9
D 5 222 1611217 2011.49 3493 3365 799.3
D 12 218 1263474 1576.44 3493 3365 799.3
D 10 70 517154 642.77 3493 3365 799.3

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