ASTROSAT CZTI

Data Quality Report

Orbit 57098

Creation date: 2026-04-18T02:06:50.302905
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_083T10_9000006566_57098cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57098cztM0_level2_quad_clean.evt
Size (bytes)568,339,20094,757,760
Size542.0 MB 90.4 MB
Events in quadrant A3,522,220638,978
Events in quadrant B4,166,879646,431
Events in quadrant C3,179,383612,964
Events in quadrant D9,643,079497,199

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150713
B0170812
C0146492
D0334182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67921021.501767%
B67924797.052415%
C6792360.530035%
D6792111716.445819%

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 7672 6793 50 50 0.65% 0.74%
B 7672 6793 295 295 3.85% 4.34%
C 7672 6793 25 25 0.33% 0.37%
D 7672 6793 1397 1397 18.21% 20.57%

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 13 248 209168 1163.02 729 709 179.2
A 4 13 159665 886.84 729 709 179.2
A 5 113 139846 776.27 729 709 179.2
B 10 16 1097646 7427.81 687 661 147.7
B 0 197 111744 752.16 687 661 147.7
B 4 171 106466 716.42 687 661 147.7
C 12 252 200634 1036.82 703 696 192.8
C 1 241 55881 286.17 703 696 192.8
C 14 254 48059 245.61 703 696 192.8
D 15 142 5785359 31077.6 657 625 186.1
D 12 33 698303 3748.17 657 625 186.1
D 2 249 270651 1450.67 657 625 186.1

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