ASTROSAT CZTI

Data Quality Report

Orbit 53995

Creation date: 2025-09-22T13:07:44.429129
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_041T01_9000006510_53995cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53995cztM0_level2_quad_clean.evt
Size (bytes)738,406,08083,116,800
Size704.2 MB 79.3 MB
Events in quadrant A3,229,463630,121
Events in quadrant B6,655,026612,273
Events in quadrant C4,202,203582,210
Events in quadrant D12,738,020235,003

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145402
B0244662
C0174392
D0424167

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65541151.754654%
B6554111316.981996%
C65543445.248703%
D6554403161.504425%

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 7624 6555 79 79 1.04% 1.21%
B 7624 6554 706 706 9.26% 10.77%
C 7624 6555 336 336 4.41% 5.13%
D 7623 6554 3621 3621 47.50% 55.25%

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 15 174 340112 2011.64 677 659 168.7
A 4 249 102766 605.1 677 659 168.7
A 4 3 60646 355.49 677 659 168.7
B 4 81 3439275 24730.4 655 633 139.0
B 0 213 333303 2392.53 655 633 139.0
B 2 249 116478 833.15 655 633 139.0
C 1 241 619801 3421.56 657 651 181.0
C 10 171 557998 3080.03 657 651 181.0
C 12 249 130409 717.07 657 651 181.0
D 8 176 9467616 88020.38 374 356 107.6
D 2 165 1171603 10889.49 374 356 107.6
D 5 113 196414 1822.82 374 356 107.6

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