ASTROSAT CZTI

Data Quality Report

Orbit 57464

Creation date: 2026-05-12T15:33:58.243931
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_113T09_9000006574_57464cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57464cztM0_level2_quad_clean.evt
Size (bytes)467,066,88094,164,480
Size445.4 MB 89.8 MB
Events in quadrant A2,798,524633,811
Events in quadrant B3,898,920654,755
Events in quadrant C6,132,564549,040
Events in quadrant D3,959,539564,862

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130661
B0159421
C0225621
D0160571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427420.653493%
B64283545.507156%
C642880512.523335%
D64282073.220286%

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 7482 6428 3 3 0.04% 0.05%
B 7482 6428 195 195 2.61% 3.03%
C 7483 6429 639 639 8.54% 9.94%
D 7483 6429 139 139 1.86% 2.16%

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 9 16018 87.7 712 694 174.7
A 3 14 11044 59.24 712 694 174.7
A 4 3 9726 51.69 712 694 174.7
B 4 206 823867 5655.56 683 658 145.6
B 10 247 116026 792.59 683 658 145.6
B 5 185 66178 450.13 683 658 145.6
C 15 224 1772317 9877.43 659 653 179.4
C 6 13 1237753 6897.12 659 653 179.4
C 1 16 309048 1719.37 659 653 179.4
D 7 96 453800 2342.33 687 657 193.5
D 2 249 240633 1240.45 687 657 193.5
D 2 153 177293 913.04 687 657 193.5

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