ASTROSAT CZTI

Data Quality Report

Orbit 54895

Creation date: 2025-11-20T19:46:59.927498
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_039T06_9000006526_54895cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54895cztM0_level2_quad_clean.evt
Size (bytes)424,149,12096,621,120
Size404.5 MB 92.1 MB
Events in quadrant A4,425,955618,592
Events in quadrant B3,120,198686,935
Events in quadrant C3,498,785608,102
Events in quadrant D4,147,056556,306

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176465
B0138182
C0148474
D0168574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65383445.261548%
B65401201.834862%
C65391101.682214%
D65392884.404343%

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 7585 6540 226 226 2.98% 3.46%
B 7586 6542 18 18 0.24% 0.28%
C 7586 6541 28 28 0.37% 0.43%
D 7586 6541 169 169 2.23% 2.58%

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 14 848861 4707.74 727 708 180.2
A 12 115 677231 3755.09 727 708 180.2
A 9 129 30161 163.48 727 708 180.2
B 5 185 119337 770.82 716 689 153.9
B 7 0 46751 299.25 716 689 153.9
B 10 247 39822 254.24 716 689 153.9
C 6 223 285375 1465.69 709 703 194.2
C 4 5 143426 734.84 709 703 194.2
C 1 16 100825 515.5 709 703 194.2
D 15 94 326606 1649.74 700 669 197.6
D 15 91 184368 929.8 700 669 197.6
D 6 46 126001 634.37 700 669 197.6

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