ASTROSAT CZTI

Data Quality Report

Orbit 37837

Creation date: 2024-06-27T21:45:06.708625
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/AS1C07_001T12_9000005352_37837cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37837cztM0_level2_quad_clean.evt
Size (bytes)460,704,96073,218,240
Size439.4 MB 69.8 MB
Events in quadrant A2,812,753486,953
Events in quadrant B2,763,542492,506
Events in quadrant C2,853,126454,040
Events in quadrant D5,167,003416,457

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114783
B0114962
C0116232
D0188462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5245180.343184%
B5245240.457579%
C5245641.220210%
D524594217.959962%

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 7128 5246 12 12 0.17% 0.23%
B 7128 5246 11 11 0.15% 0.21%
C 7128 5246 64 64 0.90% 1.22%
D 7128 5246 914 914 12.82% 17.42%

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 343334 2784.9 612 600 123.1
A 9 143 65807 529.84 612 600 123.1
A 12 189 18755 147.52 612 600 123.1
B 5 172 138048 1202.0 604 587 114.4
B 0 229 66985 580.6 604 587 114.4
B 0 213 60289 522.05 604 587 114.4
C 15 214 237443 1776.42 578 582 133.3
C 0 10 224984 1682.98 578 582 133.3
C 1 23 90641 675.43 578 582 133.3
D 1 52 2389907 18732.91 529 515 127.6
D 2 249 283530 2218.85 529 515 127.6
D 13 249 154359 1206.14 529 515 127.6

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