ASTROSAT CZTI

Data Quality Report

Orbit 38824

Creation date: 2024-06-27T21:56:54.683882
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/AS1A12_083T02_9000005404_38824cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38824cztM0_level2_quad_clean.evt
Size (bytes)368,933,76086,846,400
Size351.8 MB 82.8 MB
Events in quadrant A2,542,133603,204
Events in quadrant B2,225,035629,063
Events in quadrant C2,366,653597,899
Events in quadrant D6,146,606460,682

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104863
B098132
C099782
D0215752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4832170.351821%
B4832100.206954%
C4832110.227649%
D483294719.598510%

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 6955 4833 4 4 0.06% 0.08%
B 6955 4833 3 3 0.04% 0.06%
C 6955 4833 4 4 0.06% 0.08%
D 6955 4833 1083 1083 15.57% 22.41%

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 380158 3462.36 545 536 109.6
A 6 10 23615 210.49 545 536 109.6
A 13 6 10370 89.69 545 536 109.6
B 5 172 19349 180.44 551 537 104.3
B 0 230 14680 135.66 551 537 104.3
B 5 184 12592 115.63 551 537 104.3
C 15 214 215048 1746.75 536 540 122.8
C 15 208 24076 191.65 536 540 122.8
C 0 10 13349 104.3 536 540 122.8
D 12 227 2440809 20115.02 497 483 121.3
D 4 239 859049 7076.95 497 483 121.3
D 2 16 353314 2908.3 497 483 121.3

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