ASTROSAT CZTI

Data Quality Report

Orbit 54662

Creation date: 2025-11-05T03:07:39.951516
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_066T07_9000006522_54662cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54662cztM0_level2_quad_clean.evt
Size (bytes)514,627,20085,363,200
Size490.8 MB 81.4 MB
Events in quadrant A2,899,722616,040
Events in quadrant B3,275,427654,930
Events in quadrant C2,909,684582,598
Events in quadrant D9,492,253307,659

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130011
B0140151
C0130211
D0323811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60701041.713344%
B60701452.388797%
C6070831.367381%
D6070286947.265239%

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 7215 6071 28 28 0.39% 0.46%
B 7215 6070 25 25 0.35% 0.41%
C 7215 6071 27 27 0.37% 0.44%
D 7215 6070 2313 2313 32.06% 38.11%

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 11 3 144638 846.44 687 672 170.1
A 0 8 49760 288.61 687 672 170.1
A 8 9 15202 85.43 687 672 170.1
B 5 172 408194 2778.91 680 657 146.7
B 7 252 65527 442.34 680 657 146.7
B 1 207 40484 271.57 680 657 146.7
C 13 3 48485 257.73 672 666 185.5
C 4 5 45116 239.57 672 666 185.5
C 6 223 42548 225.73 672 666 185.5
D 11 129 5943274 43292.74 482 459 137.3
D 2 172 819984 5970.15 482 459 137.3
D 0 19 574767 4183.77 482 459 137.3

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