ASTROSAT CZTI

Data Quality Report

Orbit 54368

Creation date: 2025-10-16T08:12:52.700281
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_54368cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54368cztM0_level2_quad_clean.evt
Size (bytes)747,299,52081,633,600
Size712.7 MB 77.9 MB
Events in quadrant A3,251,727614,918
Events in quadrant B3,210,643668,365
Events in quadrant C6,436,647518,525
Events in quadrant D14,246,873205,793

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148481
B0143512
C0239221
D0468481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66571772.658855%
B6657610.916329%
C6657108216.253568%
D6657448967.432778%

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 7662 6658 80 80 1.04% 1.20%
B 7662 6658 11 11 0.14% 0.17%
C 7662 6658 970 970 12.66% 14.57%
D 7662 6658 4234 4234 55.26% 63.59%

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 15 174 365629 2152.28 688 671 169.6
A 8 246 36507 211.34 688 671 169.6
A 12 17 36159 209.28 688 671 169.6
B 0 171 86282 582.71 687 663 146.9
B 5 172 79258 534.91 687 663 146.9
B 0 63 78991 533.09 687 663 146.9
C 2 255 1376977 8017.18 625 620 171.7
C 1 241 1164534 6779.72 625 620 171.7
C 1 29 771177 4488.44 625 620 171.7
D 8 176 12096067 99194.28 425 405 121.9
D 3 12 238079 1949.12 425 405 121.9
D 12 3 106173 867.38 425 405 121.9

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