ASTROSAT CZTI

Data Quality Report

Orbit 54954

Creation date: 2025-11-24T19:09:31.322183
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_014T01_9000006528_54954cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54954cztM0_level2_quad_clean.evt
Size (bytes)634,138,56076,216,320
Size604.8 MB 72.7 MB
Events in quadrant A4,856,452514,510
Events in quadrant B2,732,432615,140
Events in quadrant C2,849,938546,798
Events in quadrant D12,561,298205,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186961
B0126781
C0129911
D0415491

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A609072511.904762%
B60901342.200328%
C60911131.855196%
D6091380362.436382%

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 6905 6091 594 594 8.60% 9.75%
B 6905 6091 8 8 0.12% 0.13%
C 6906 6092 29 29 0.42% 0.48%
D 6906 6092 3726 3726 53.95% 61.16%

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 32 1982000 12774.4 634 616 155.1
A 0 8 256946 1652.61 634 616 155.1
A 3 14 70979 453.64 634 616 155.1
B 2 249 43799 306.7 655 629 140.8
B 5 185 25377 175.82 655 629 140.8
B 0 182 19479 133.92 655 629 140.8
C 14 254 71226 398.44 649 643 177.2
C 6 223 65064 363.65 649 643 177.2
C 12 252 60477 337.76 649 643 177.2
D 15 94 9583914 86109.72 387 370 111.3
D 2 249 542851 4874.28 387 370 111.3
D 11 129 160713 1440.71 387 370 111.3

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