ASTROSAT CZTI

Data Quality Report

Orbit 54780

Creation date: 2025-11-13T08:22:57.576482
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_103T01_9000006524_54780cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54780cztM0_level2_quad_clean.evt
Size (bytes)434,888,64072,020,160
Size414.7 MB 68.7 MB
Events in quadrant A2,546,353504,456
Events in quadrant B5,516,986431,722
Events in quadrant C3,973,749435,157
Events in quadrant D3,641,618431,534

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012810
B012812
C012810
D012816

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132531357
B0235183391
C0194434065
D0171932400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55251572.841629%
B5316111620.993228%
C52524268.111196%
D54063616.677765%

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 8710 5900 16 16 0.18% 0.27%
B 8711 5760 825 825 9.47% 14.32%
C 8712 5688 199 199 2.28% 3.50%
D 8712 5832 223 223 2.56% 3.82%

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 13 248 103748 685.55 604 588 150.5
A 0 8 26052 169.22 604 588 150.5
A 5 240 22771 147.42 604 588 150.5
B 2 249 3255608 28256.29 532 512 115.2
B 5 185 78976 681.12 532 512 115.2
B 10 247 30416 259.59 532 512 115.2
C 9 38 1146160 7597.14 544 539 150.8
C 13 3 269348 1782.6 544 539 150.8
C 14 254 134713 889.77 544 539 150.8
D 15 94 425194 2661.91 562 538 159.5
D 11 129 355459 2224.79 562 538 159.5
D 3 176 184143 1150.91 562 538 159.5

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