ASTROSAT CZTI

Data Quality Report

Orbit 35652

Creation date: 2022-05-03T00:58:23.469157
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/AS1C07_001T07_9000005104_35652cztM0_level2.evt modeM0/AS1C07_001T07_9000005104_35652cztM0_level2_quad_clean.evt
Size (bytes)753,600,96096,649,920
Size718.7 MB 92.2 MB
Events in quadrant A11,463,144459,937
Events in quadrant B3,925,737700,406
Events in quadrant C3,347,711731,077
Events in quadrant D3,747,741681,949

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0374653
B0150052
C0130372
D0145412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5007405580.986619%
B50074719.406830%
C50072244.473737%
D50073617.209906%

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 7038 5007 3829 3829 54.40% 76.47%
B 7039 5008 348 348 4.94% 6.95%
C 7039 5008 179 179 2.54% 3.57%
D 7039 5008 264 264 3.75% 5.27%

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 15 169 9652970 111299.86 438 431 86.7
A 10 83 96143 1103.62 438 431 86.7
A 12 189 9249 101.68 438 431 86.7
B 5 172 1510995 13655.75 590 574 110.6
B 5 200 38532 343.18 590 574 110.6
B 12 111 12775 110.31 590 574 110.6
C 0 10 413710 3022.22 602 606 136.7
C 1 23 222294 1621.84 602 606 136.7
C 15 214 204021 1488.16 602 606 136.7
D 10 118 640727 4565.35 588 573 140.2
D 2 249 221023 1572.17 588 573 140.2
D 8 195 149220 1060.1 588 573 140.2

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