ASTROSAT CZTI

Data Quality Report

Orbit 53996

Creation date: 2025-09-22T19:33:46.322107
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/AS1A14_041T01_9000006510_53996cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53996cztM0_level2_quad_clean.evt
Size (bytes)614,805,12094,320,000
Size586.3 MB 90.0 MB
Events in quadrant A3,238,125687,637
Events in quadrant B4,067,784730,575
Events in quadrant C4,155,755638,736
Events in quadrant D10,737,729299,059

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152772
B0173483
C0176442
D0372272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7178430.599053%
B71782563.566453%
C71782653.691836%
D7178367551.198105%

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 8918 7180 11 11 0.12% 0.15%
B 8918 7178 112 112 1.26% 1.56%
C 8918 7179 214 214 2.40% 2.98%
D 8918 7179 3152 3152 35.34% 43.91%

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 15 174 90978 479.11 755 735 188.4
A 4 249 69986 367.66 755 735 188.4
A 8 6 28756 148.77 755 735 188.4
B 4 81 482914 3034.69 750 722 158.9
B 0 213 387260 2432.69 750 722 158.9
B 7 252 48975 303.68 750 722 158.9
C 1 241 436921 2152.97 734 727 202.6
C 10 171 366605 1805.9 734 727 202.6
C 13 3 83552 408.81 734 727 202.6
D 8 176 8000306 65118.52 423 403 122.9
D 2 165 478779 3893.94 423 403 122.9
D 6 239 246463 2002.91 423 403 122.9

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