ASTROSAT CZTI

Data Quality Report

Orbit 54807

Creation date: 2025-11-14T22:15:18.394448
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_039T06_9000006526_54807cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54807cztM0_level2_quad_clean.evt
Size (bytes)442,730,88099,299,520
Size422.2 MB 94.7 MB
Events in quadrant A3,004,065663,336
Events in quadrant B3,519,860702,019
Events in quadrant C5,083,743588,300
Events in quadrant D4,257,303584,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140282
B0153642
C0198272
D0173922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67281061.575505%
B67281922.853746%
C67286409.512485%
D67282293.403686%

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 7833 6728 10 10 0.13% 0.15%
B 7833 6728 66 66 0.84% 0.98%
C 7833 6728 510 510 6.51% 7.58%
D 7833 6728 158 158 2.02% 2.35%

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 8 6 38721 206.6 746 727 183.9
A 3 94 31850 169.24 746 727 183.9
A 5 240 13104 67.3 746 727 183.9
B 5 185 475366 3035.07 727 702 156.4
B 6 255 64718 409.33 727 702 156.4
B 10 247 50132 316.06 727 702 156.4
C 9 38 1769668 9161.89 704 698 193.1
C 12 252 234573 1211.29 704 698 193.1
C 6 223 118492 610.08 704 698 193.1
D 8 160 749808 3654.83 722 690 205.0
D 15 109 130000 630.88 722 690 205.0
D 10 181 116129 563.21 722 690 205.0

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