ASTROSAT CZTI

Data Quality Report

Orbit 53889

Creation date: 2025-09-14T12:44:17.881099
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_057T04_9000006508_53889cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53889cztM0_level2_quad_clean.evt
Size (bytes)851,739,84078,655,680
Size812.3 MB 75.0 MB
Events in quadrant A4,943,957602,618
Events in quadrant B3,644,897675,002
Events in quadrant C8,628,134448,452
Events in quadrant D13,809,139202,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193072
B0152492
C0301242
D0455367

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64944767.329843%
B6495821.262510%
C6495191629.499615%
D6494443768.324607%

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 7559 6495 459 459 6.07% 7.07%
B 7560 6496 23 23 0.30% 0.35%
C 7560 6495 1503 1503 19.88% 23.14%
D 7558 6493 4012 4012 53.08% 61.79%

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 1049711 6122.22 691 674 171.3
A 15 174 834317 4865.17 691 674 171.3
A 4 249 119765 695.02 691 674 171.3
B 5 250 213215 1430.04 701 676 148.6
B 5 185 154835 1037.24 701 676 148.6
B 10 247 101691 679.67 701 676 148.6
C 15 224 4222744 25895.29 592 589 163.0
C 15 209 1448159 8878.22 592 589 163.0
C 4 5 144081 880.06 592 589 163.0
D 8 176 11140079 101134.21 379 363 110.1
D 6 239 273689 2481.45 379 363 110.1
D 13 153 171879 1557.14 379 363 110.1

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