ASTROSAT CZTI

Data Quality Report

Orbit 51507

Creation date: 2025-04-06T18:36:26.796063
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/AS1A13_090T01_9000006458_51507cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51507cztM0_level2_quad_clean.evt
Size (bytes)1,836,293,760230,172,480
Size1.7 GB 219.5 MB
Events in quadrant A13,156,5111,536,298
Events in quadrant B20,831,7171,300,380
Events in quadrant C10,723,7901,577,508
Events in quadrant D21,878,2401,317,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0509073
B0740417
C0439053
D0774523

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1794113547.546959%
B17941509528.398640%
C179415302.954127%
D17941270715.088345%

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 20385 17941 1038 1038 5.09% 5.79%
B 20385 17941 4083 4083 20.03% 22.76%
C 20385 17941 359 359 1.76% 2.00%
D 20385 17941 2935 2935 14.40% 16.36%

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 2 143 1235313 2694.17 1879 1834 457.8
A 12 250 907529 1978.22 1879 1834 457.8
A 7 64 662922 1443.95 1879 1834 457.8
B 4 81 10204900 27906.43 1703 1642 365.6
B 2 208 1751938 4787.15 1703 1642 365.6
B 15 52 633226 1727.41 1703 1642 365.6
C 12 247 860417 1669.23 1872 1859 514.3
C 13 3 587750 1139.11 1872 1859 514.3
C 12 252 303034 585.55 1872 1859 514.3
D 8 176 8796869 17905.11 1775 1717 491.2
D 11 176 3565034 7254.18 1775 1717 491.2
D 6 42 834329 1695.03 1775 1717 491.2

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