ASTROSAT CZTI

Data Quality Report

Orbit 53313

Creation date: 2025-08-10T13:40:56.430006
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/AS1C09_011T08_9000006492_53313cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53313cztM0_level2_quad_clean.evt
Size (bytes)616,772,16094,956,480
Size588.2 MB 90.6 MB
Events in quadrant A3,979,065629,813
Events in quadrant B5,321,961686,118
Events in quadrant C8,943,335493,015
Events in quadrant D4,054,018587,387

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169312
B0206432
C0313242
D0171782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68663214.675211%
B68663925.709292%
C6865182426.569556%
D68652233.248361%

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 7691 6867 245 245 3.19% 3.57%
B 7691 6867 224 224 2.91% 3.26%
C 7689 6865 1556 1556 20.24% 22.67%
D 7690 6866 173 173 2.25% 2.52%

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 12 115 721018 4112.67 697 678 175.2
A 3 14 103055 584.5 697 678 175.2
A 4 249 86628 490.72 697 678 175.2
B 2 249 642175 4369.71 697 673 146.8
B 13 245 420113 2857.09 697 673 146.8
B 0 197 359010 2440.88 697 673 146.8
C 15 224 3114822 18544.3 604 599 167.9
C 1 241 2627533 15642.63 604 599 167.9
C 12 254 232930 1383.46 604 599 167.9
D 3 12 420560 2140.31 683 651 196.2
D 8 48 236257 1200.9 683 651 196.2
D 2 120 163788 831.52 683 651 196.2

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