ASTROSAT CZTI

Data Quality Report

Orbit 38830

Creation date: 2024-06-27T21:57:00.310784
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/AS1A12_083T02_9000005404_38830cztM0_level2.fits modeM0/AS1A12_083T02_9000005404_38830cztM0_level2_quad_clean.evt
Size (bytes)213,926,40055,514,880
Size204.0 MB 52.9 MB
Events in quadrant A1,801,686375,269
Events in quadrant B1,622,081381,419
Events in quadrant C1,586,086358,941
Events in quadrant D2,638,739321,107

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074301
B072811
C069421
D0101391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A344990.260945%
B3449411.188750%
C344930.086982%
D34491714.957959%

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 3449 3449 3 3 0.09% 0.09%
B 3449 3449 25 25 0.72% 0.72%
C 3449 3449 0 0 0.00% 0.00%
D 3449 3449 138 138 4.00% 4.00%

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 242743 3140.46 373 365 77.2
A 6 10 66112 851.87 373 365 77.2
A 13 248 28915 369.92 373 365 77.2
B 15 85 105356 1447.21 368 357 72.6
B 0 230 26249 356.87 368 357 72.6
B 5 200 17887 241.62 368 357 72.6
C 15 214 144098 1668.83 362 363 86.1
C 15 208 17227 195.8 362 363 86.1
C 3 233 8734 97.19 362 363 86.1
D 12 227 668544 7467.64 357 346 89.5
D 12 235 133747 1490.86 357 346 89.5
D 2 249 123334 1374.49 357 346 89.5

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