ASTROSAT CZTI

Data Quality Report

Orbit 12985

Creation date: 2024-06-27T16:34:46.372185
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/AS1G08_055T01_9000001912_12985cztM0_level2.evt modeM0/AS1G08_055T01_9000001912_12985cztM0_level2_quad_clean.evt
Size (bytes)666,210,24088,971,840
Size635.3 MB 84.9 MB
Events in quadrant A3,714,226574,983
Events in quadrant B6,842,190552,593
Events in quadrant C3,111,762578,489
Events in quadrant D6,069,731535,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150823
B0246432
C0133872
D0224102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64811352.083012%
B6481147122.697115%
C6481911.404104%
D64813805.863293%

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 7552 6483 3 3 0.04% 0.05%
B 7552 6483 841 841 11.14% 12.97%
C 7552 6483 1 1 0.01% 0.02%
D 7552 6483 308 308 4.08% 4.75%

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 8 15 439577 2708.66 809 794 162.0
A 12 189 120090 736.43 809 794 162.0
A 15 174 17842 105.24 809 794 162.0
B 0 85 2736305 20221.06 733 715 135.3
B 3 64 611025 4511.32 733 715 135.3
B 4 239 456475 3368.91 733 715 135.3
C 14 234 8899 44.49 794 799 182.1
C 13 61 5743 27.15 794 799 182.1
C 0 207 4794 21.94 794 799 182.1
D 1 52 3046509 16379.59 779 759 185.9
D 8 195 48233 255.31 779 759 185.9
D 2 234 31110 163.22 779 759 185.9

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