ASTROSAT CZTI

Data Quality Report

Orbit 37431

Creation date: 2024-06-27T21:39:53.823732
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/AS1A09_002T01_9000005322_37431cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37431cztM0_level2_quad_clean.evt
Size (bytes)401,866,56071,850,240
Size383.2 MB 68.5 MB
Events in quadrant A2,697,396455,886
Events in quadrant B2,998,747463,020
Events in quadrant C3,136,651452,530
Events in quadrant D2,978,351434,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113053
B0123172
C0124892
D0123492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5293130.245607%
B52931202.267145%
C52931402.645003%
D5293741.398073%

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 7086 5294 8 8 0.11% 0.15%
B 7086 5294 84 84 1.19% 1.59%
C 7086 5294 122 122 1.72% 2.30%
D 7086 5294 66 66 0.93% 1.25%

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 285041 2328.24 603 592 122.2
A 12 189 29934 240.17 603 592 122.2
A 9 143 13460 105.33 603 592 122.2
B 5 172 272799 2389.9 600 586 113.9
B 0 189 158413 1385.65 600 586 113.9
B 4 171 70951 617.77 600 586 113.9
C 14 254 371339 2744.94 582 587 135.1
C 0 10 226984 1676.18 582 587 135.1
C 15 214 223735 1652.13 582 587 135.1
D 2 153 168047 1197.29 582 566 139.9
D 5 157 147195 1048.22 582 566 139.9
D 12 235 106214 755.26 582 566 139.9

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