ASTROSAT CZTI

Data Quality Report

Orbit 42998

Creation date: 2024-06-27T22:46:43.493170
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/AS1T05_148T01_9000005838_42998cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42998cztM0_level2_quad_clean.evt
Size (bytes)336,291,84099,264,960
Size320.7 MB 94.7 MB
Events in quadrant A3,074,551703,067
Events in quadrant B2,825,501704,797
Events in quadrant C2,479,288677,769
Events in quadrant D3,686,877576,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139917405911080139917149601838
B0-1-1
C0-1-1
D0-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121602
B0115312
C0102252
D0142972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4908771.568867%
B4907801.630324%
C490740.081516%
D49073306.725087%

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 6942 4909 57 57 0.82% 1.16%
B 6941 4907 43 43 0.62% 0.88%
C 6941 4907 0 0 0.00% 0.00%
D 6941 4907 329 329 4.74% 6.70%

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 568649 4359.57 587 578 130.3
A 15 237 204781 1567.12 587 578 130.3
A 7 3 27992 210.38 587 578 130.3
B 4 81 189186 1550.78 586 573 121.6
B 4 171 167297 1370.81 586 573 121.6
B 5 255 106535 871.22 586 573 121.6
C 15 214 199119 1382.01 572 578 143.7
C 14 254 11396 75.3 572 578 143.7
C 15 208 10694 70.42 572 578 143.7
D 13 249 548192 3823.71 550 532 143.2
D 10 118 364249 2539.44 550 532 143.2
D 1 47 168062 1169.68 550 532 143.2

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