ASTROSAT CZTI

Data Quality Report

Orbit 54515

Creation date: 2025-10-26T06:06:28.835581
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_127T09_9000006520_54515cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54515cztM0_level2_quad_clean.evt
Size (bytes)448,885,44094,812,480
Size428.1 MB 90.4 MB
Events in quadrant A3,634,443631,042
Events in quadrant B3,576,747675,101
Events in quadrant C5,383,831551,176
Events in quadrant D3,525,356569,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152182
B0151422
C0206617
D0149952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63752393.749020%
B63751933.027451%
C637475911.907750%
D63741282.008158%

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 7480 6376 136 136 1.82% 2.13%
B 7480 6376 57 57 0.76% 0.89%
C 7479 6375 541 541 7.23% 8.49%
D 7479 6375 71 71 0.95% 1.11%

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 11 3 546342 3081.52 713 694 177.1
A 7 237 91621 513.51 713 694 177.1
A 4 3 73471 411.0 713 694 177.1
B 10 14 349161 2275.3 711 684 153.2
B 0 213 150703 979.51 711 684 153.2
B 5 185 88175 571.25 711 684 153.2
C 4 5 2008675 10927.65 668 661 183.8
C 13 3 484914 2635.31 668 661 183.8
C 14 254 87181 470.84 668 661 183.8
D 10 181 123304 611.87 697 667 200.4
D 3 224 117502 582.93 697 667 200.4
D 3 144 110956 550.27 697 667 200.4

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