ASTROSAT CZTI

Data Quality Report

Orbit 34581

Creation date: 2022-02-19T15:57:55.179961
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_167T01_9000004940_34581cztM0_level2.evt modeM0/AS1A05_167T01_9000004940_34581cztM0_level2_quad_clean.evt
Size (bytes)356,307,84040,800,960
Size339.8 MB 38.9 MB
Events in quadrant A1,958,718245,315
Events in quadrant B2,444,711248,761
Events in quadrant C2,238,275243,594
Events in quadrant D3,890,751228,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078661
B096211
C087821
D0144211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A380220.052604%
B3802691.814834%
C3802240.631247%
D38021002.630195%

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 3802 3802 3 3 0.08% 0.08%
B 3802 3802 48 48 1.26% 1.26%
C 3802 3802 15 15 0.39% 0.39%
D 3802 3802 67 67 1.76% 1.76%

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 10 83 23800 234.83 493 484 99.3
A 7 16 21740 214.08 493 484 99.3
A 13 254 6480 60.39 493 484 99.3
B 5 172 192982 2115.97 480 469 91.0
B 0 189 117355 1284.73 480 469 91.0
B 0 190 110139 1205.41 480 469 91.0
C 15 214 160949 1459.62 473 477 109.9
C 3 233 155000 1405.51 473 477 109.9
C 0 10 38108 342.28 473 477 109.9
D 8 195 1412095 12107.7 474 461 116.6
D 1 52 232877 1993.45 474 461 116.6
D 2 249 134556 1150.14 474 461 116.6

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