ASTROSAT CZTI

Data Quality Report

Orbit 24087

Creation date: 2024-06-27T19:02:00.025153
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/AS1T03_182T01_9000003560_24087cztM0_level2.evt modeM0/AS1T03_182T01_9000003560_24087cztM0_level2_quad_clean.evt
Size (bytes)539,758,08082,356,480
Size514.8 MB 78.5 MB
Events in quadrant A3,338,902527,757
Events in quadrant B3,662,925529,588
Events in quadrant C3,339,652503,820
Events in quadrant D5,577,599492,301

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133302
B0145001
C0133941
D0210771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6311871.378545%
B63111031.632071%
C63121141.806084%
D63124767.541191%

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 7526 6311 0 0 0.00% 0.00%
B 7526 6312 9 9 0.12% 0.14%
C 7527 6312 0 0 0.00% 0.00%
D 7527 6312 357 357 4.74% 5.66%

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 13 254 10476 55.47 863 847 173.6
A 0 226 7487 38.25 863 847 173.6
A 3 137 6786 34.22 863 847 173.6
B 0 197 288689 1818.15 845 826 158.3
B 0 189 20310 123.06 845 826 158.3
B 12 111 18051 108.79 845 826 158.3
C 14 238 130406 683.0 816 824 189.7
C 7 247 19933 100.72 816 824 189.7
C 0 239 6117 27.9 816 824 189.7
D 12 218 931673 4659.82 822 803 199.8
D 8 195 730183 3651.18 822 803 199.8
D 1 52 614643 3072.81 822 803 199.8

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