ASTROSAT CZTI

Data Quality Report

Orbit 54281

Creation date: 2025-10-10T12:31:22.589810
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_126T15_9000006516_54281cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54281cztM0_level2_quad_clean.evt
Size (bytes)445,498,56090,601,920
Size424.9 MB 86.4 MB
Events in quadrant A2,845,981614,518
Events in quadrant B3,236,362661,221
Events in quadrant C6,475,418470,654
Events in quadrant D3,428,356545,069

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134101
B0143281
C0238331
D0148781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6482260.401111%
B6483440.678698%
C6483139821.564091%
D6483731.126022%

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 7507 6483 10 10 0.13% 0.15%
B 7508 6483 15 15 0.20% 0.23%
C 7508 6484 1409 1409 18.77% 21.73%
D 7508 6484 69 69 0.92% 1.06%

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 3 110 72492 433.52 671 653 165.7
A 4 3 50036 298.01 671 653 165.7
A 11 3 28706 169.29 671 653 165.7
B 7 0 299140 2086.16 665 640 143.1
B 5 185 94688 657.28 665 640 143.1
B 8 234 46910 323.37 665 640 143.1
C 1 241 3627229 22209.3 591 585 163.3
C 4 5 357091 2183.22 591 585 163.3
C 14 254 96068 584.73 591 585 163.3
D 6 239 327538 1782.0 641 611 183.5
D 2 153 167338 908.79 641 611 183.5
D 2 120 65836 355.52 641 611 183.5

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