ASTROSAT CZTI

Data Quality Report

Orbit 51544

Creation date: 2025-04-09T06:09:45.239179
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/AS1A13_090T01_9000006458_51544cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51544cztM0_level2_quad_clean.evt
Size (bytes)870,180,480104,690,880
Size829.9 MB 99.8 MB
Events in quadrant A8,486,804704,352
Events in quadrant B11,865,351567,247
Events in quadrant C4,073,560728,068
Events in quadrant D7,163,338610,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309050
B0408783
C0178720
D0269680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A805083810.409938%
B8049288335.818114%
C8049831.031184%
D8050100612.496894%

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 8050 8050 627 627 7.79% 7.79%
B 8049 8049 2330 2330 28.95% 28.95%
C 8049 8049 68 68 0.84% 0.84%
D 8050 8050 911 911 11.32% 11.32%

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 12 250 1587060 7589.48 848 827 209.0
A 12 80 1519564 7266.54 848 827 209.0
A 12 3 662212 3164.46 848 827 209.0
B 10 44 7484360 46006.71 753 728 162.7
B 15 52 588942 3616.13 753 728 162.7
B 6 51 153627 939.97 753 728 162.7
C 13 3 381363 1634.12 852 844 232.9
C 3 233 109815 467.97 852 844 232.9
C 12 249 41672 175.33 852 844 232.9
D 8 176 2748585 12586.25 780 753 218.3
D 12 6 519108 2374.29 780 753 218.3
D 2 249 223297 1019.35 780 753 218.3

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