ASTROSAT CZTI

Data Quality Report

Orbit 53617

Creation date: 2025-08-27T11:46:13.332958
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_004T05_9000006502_53617cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53617cztM0_level2_quad_clean.evt
Size (bytes)1,073,384,64056,669,760
Size1023.7 MB 54.0 MB
Events in quadrant A13,269,425150,013
Events in quadrant B8,127,212420,447
Events in quadrant C9,624,548324,225
Events in quadrant D8,261,533411,283

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434743
B0281891
C0325921
D0285721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5855457578.138343%
B5856209235.724044%
C5856270146.123634%
D5856156826.775956%

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 6904 5852 4467 4467 64.70% 76.33%
B 6905 5855 1673 1673 24.23% 28.57%
C 6905 5855 2558 2558 37.05% 43.69%
D 6906 5856 1506 1506 21.81% 25.72%

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 3 78 8142485 94343.19 338 330 86.3
A 4 95 3109663 36027.86 338 330 86.3
A 8 249 266064 3079.06 338 330 86.3
B 10 254 3779683 31499.07 560 540 120.0
B 15 20 1117311 9308.26 560 540 120.0
B 5 172 310386 2582.56 560 540 120.0
C 1 241 4459563 33870.25 479 474 131.7
C 15 224 2672342 20294.92 479 474 131.7
C 13 3 295283 2239.3 479 474 131.7
D 8 176 3387693 20341.25 574 547 166.5
D 12 34 1608476 9656.29 574 547 166.5
D 10 172 359345 2154.73 574 547 166.5

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