ASTROSAT CZTI

Data Quality Report

Orbit 37129

Creation date: 2024-06-27T21:35:57.069631
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/AS1A11_079T01_9000005284_37129cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37129cztM0_level2_quad_clean.evt
Size (bytes)429,013,44092,586,240
Size409.1 MB 88.3 MB
Events in quadrant A2,945,175628,418
Events in quadrant B3,310,867621,470
Events in quadrant C3,070,379609,783
Events in quadrant D3,309,053575,699

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119093
B0130872
C0122692
D0129552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A526690.170908%
B52661262.392708%
C5266210.398785%
D52661212.297759%

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 7329 5267 2 2 0.03% 0.04%
B 7329 5267 103 103 1.41% 1.96%
C 7329 5267 15 15 0.20% 0.28%
D 7329 5267 120 120 1.64% 2.28%

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 254024 1849.67 692 681 137.0
A 9 143 10429 71.17 692 681 137.0
A 13 6 7412 49.14 692 681 137.0
B 5 172 587334 4625.71 671 656 126.8
B 5 200 23926 183.47 671 656 126.8
B 5 255 21268 162.52 671 656 126.8
C 15 214 244754 1602.18 658 665 152.3
C 0 10 236886 1550.54 658 665 152.3
C 14 254 14796 92.75 658 665 152.3
D 13 249 338107 2107.29 663 648 160.1
D 7 102 75561 467.8 663 648 160.1
D 12 235 52828 325.84 663 648 160.1

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