ASTROSAT CZTI

Data Quality Report

Orbit 58394

Creation date: 2026-07-14T07:12:39.942272
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_045T01_9000006590_58394cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58394cztM0_level2_quad_clean.evt
Size (bytes)594,293,76092,687,040
Size566.8 MB 88.4 MB
Events in quadrant A3,978,057614,939
Events in quadrant B5,850,546610,013
Events in quadrant C3,866,915586,349
Events in quadrant D7,807,958548,499

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163172
B0217585
C0160692
D0278662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64012083.249492%
B640087113.609375%
C64002604.062500%
D64003465.406250%

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 7526 6402 165 165 2.19% 2.58%
B 7525 6401 669 669 8.89% 10.45%
C 7525 6401 248 248 3.30% 3.87%
D 7525 6401 514 514 6.83% 8.03%

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 7 64 471817 2718.44 702 685 173.3
A 4 249 305009 1755.95 702 685 173.3
A 2 143 188177 1081.83 702 685 173.3
B 5 172 2399752 16787.53 673 648 142.9
B 4 201 380132 2655.41 673 648 142.9
B 6 255 86608 601.5 673 648 142.9
C 9 38 462067 2471.69 677 672 186.7
C 4 5 350527 1874.17 677 672 186.7
C 6 223 185493 990.08 677 672 186.7
D 5 113 4418258 23026.9 669 640 191.8
D 11 129 274463 1427.31 669 640 191.8
D 2 249 239867 1246.97 669 640 191.8

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