ASTROSAT CZTI

Data Quality Report

Orbit 51743

Creation date: 2025-04-22T15:10:20.294114
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_9000006464_51743cztM0_level2.fits modeM0/AS1A13_090T01_9000006464_51743cztM0_level2_quad_clean.evt
Size (bytes)587,229,12093,461,760
Size560.0 MB 89.1 MB
Events in quadrant A5,119,460612,587
Events in quadrant B3,957,279674,793
Events in quadrant C5,780,057582,716
Events in quadrant D6,377,803507,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196672
B0161993
C0216312
D0234382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64913735.746418%
B64902874.422188%
C64905418.335901%
D649098615.192604%

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 7506 6492 225 225 3.00% 3.47%
B 7505 6491 106 106 1.41% 1.63%
C 7505 6491 398 398 5.30% 6.13%
D 7505 6491 832 832 11.09% 12.82%

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 4 175 754436 4200.94 727 708 179.4
A 12 3 486204 2705.93 727 708 179.4
A 11 3 266139 1479.39 727 708 179.4
B 1 223 176538 1138.94 719 696 154.4
B 5 32 132762 855.4 719 696 154.4
B 4 174 101664 653.98 719 696 154.4
C 10 171 1120322 5826.84 699 694 192.2
C 13 3 418590 2174.84 699 694 192.2
C 15 230 394578 2049.87 699 694 192.2
D 11 129 3233483 17343.22 672 649 186.4
D 11 176 74909 398.38 672 649 186.4
D 2 249 71297 379.01 672 649 186.4

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