ASTROSAT CZTI

Data Quality Report

Orbit 46202

Creation date: 2024-06-27T23:20:21.610930
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/AS1A13_093T40_9000006182_46202cztM0_level2.fits modeM0/AS1A13_093T40_9000006182_46202cztM0_level2_quad_clean.evt
Size (bytes)526,515,840113,532,480
Size502.1 MB 108.3 MB
Events in quadrant A6,649,873748,923
Events in quadrant B4,079,087785,378
Events in quadrant C3,228,968753,560
Events in quadrant D4,978,226653,057

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244352
B0167252
C0150322
D0199012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71354366.110722%
B71352673.742116%
C7135550.770848%
D71345587.821699%

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 7735 7136 124 124 1.60% 1.74%
B 7735 7135 57 57 0.74% 0.80%
C 7735 7136 14 14 0.18% 0.20%
D 7734 7135 454 454 5.87% 6.36%

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 3259286 20102.59 786 768 162.1
A 0 247 281600 1732.52 786 768 162.1
A 0 226 21847 130.04 786 768 162.1
B 3 112 679622 4374.32 787 763 155.2
B 5 172 226599 1455.21 787 763 155.2
B 5 32 21896 136.17 787 763 155.2
C 12 2 116689 642.45 771 773 180.4
C 14 254 53665 293.15 771 773 180.4
C 2 14 51117 279.02 771 773 180.4
D 13 249 1198810 6450.02 745 721 185.7
D 1 52 280531 1506.38 745 721 185.7
D 2 249 274294 1472.81 745 721 185.7

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