ASTROSAT CZTI

Data Quality Report

Orbit 28951

Creation date: 2024-06-27T19:58:27.008469
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/AS1A10_123T08_9000004152_28951cztM0_level2.evt modeM0/AS1A10_123T08_9000004152_28951cztM0_level2_quad_clean.evt
Size (bytes)519,264,00099,383,040
Size495.2 MB 94.8 MB
Events in quadrant A3,047,566648,930
Events in quadrant B3,149,322676,935
Events in quadrant C3,273,468646,021
Events in quadrant D5,826,528596,343

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131242
B0132822
C0135882
D0217332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328180.284450%
B6328520.821745%
C63281121.769912%
D63284947.806574%

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 7596 6326 0 0 0.00% 0.00%
B 7596 6326 1 1 0.01% 0.02%
C 7596 6326 0 0 0.00% 0.00%
D 7596 6326 458 458 6.03% 7.24%

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 10948 64.67 790 776 157.3
A 3 137 7463 42.52 790 776 157.3
A 0 226 6503 36.41 790 776 157.3
B 10 245 22284 144.77 795 775 148.6
B 12 111 17939 115.52 795 775 148.6
B 11 111 16297 104.47 795 775 148.6
C 14 238 136747 771.23 764 769 176.3
C 3 233 120083 676.72 764 769 176.3
C 14 254 20380 111.23 764 769 176.3
D 8 195 1034161 5862.87 739 719 176.3
D 1 52 899607 5099.52 739 719 176.3
D 12 79 866513 4911.78 739 719 176.3

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