ASTROSAT CZTI

Data Quality Report

Orbit 37973

Creation date: 2024-06-27T21:46:51.512174
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_082T01_9000005356_37973cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37973cztM0_level2_quad_clean.evt
Size (bytes)455,238,72079,358,400
Size434.1 MB 75.7 MB
Events in quadrant A5,096,134522,327
Events in quadrant B3,886,601508,166
Events in quadrant C2,890,079527,797
Events in quadrant D4,540,238449,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191913
B0152882
C0120592
D0172422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5649731.292264%
B56494057.169411%
C5649350.619579%
D56494668.249248%

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 7323 5651 28 28 0.38% 0.50%
B 7323 5651 268 268 3.66% 4.74%
C 7323 5651 24 24 0.33% 0.42%
D 7323 5651 464 464 6.34% 8.21%

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 15 222 2128751 16607.28 634 621 128.1
A 10 83 404790 3154.01 634 621 128.1
A 12 16 55962 431.86 634 621 128.1
B 5 184 743663 6317.57 617 600 117.6
B 5 200 425281 3610.67 617 600 117.6
B 5 172 109718 927.73 617 600 117.6
C 15 214 240267 1672.32 617 619 143.3
C 0 10 188633 1312.01 617 619 143.3
C 14 254 44356 305.21 617 619 143.3
D 2 249 795873 5363.77 602 585 148.3
D 12 227 483926 3259.86 602 585 148.3
D 12 233 393624 2650.83 602 585 148.3

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