ASTROSAT CZTI

Data Quality Report

Orbit 50531

Creation date: 2025-01-31T00:56:24.499349
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/AS1T05_239T01_9000006444_50531cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50531cztM0_level2_quad_clean.evt
Size (bytes)2,389,331,520203,587,200
Size2.2 GB 194.2 MB
Events in quadrant A14,967,6051,511,346
Events in quadrant B17,686,0211,454,767
Events in quadrant C23,687,5151,136,605
Events in quadrant D30,728,250825,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564223
B0647095
C0827703
D01036973

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1789416849.410976%
B17894322818.039566%
C17894513128.674416%
D17894817045.657762%

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 19284 17897 1163 1163 6.03% 6.50%
B 19284 17897 2314 2314 12.00% 12.93%
C 19284 17897 3529 3529 18.30% 19.72%
D 19284 17895 7409 7409 38.42% 41.40%

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 12 250 1844489 3991.28 1862 1811 461.7
A 3 14 1480241 3202.31 1862 1811 461.7
A 3 130 782537 1691.07 1862 1811 461.7
B 7 0 6059172 16062.7 1783 1722 377.1
B 4 170 1634758 4330.36 1783 1722 377.1
B 1 255 1036112 2742.92 1783 1722 377.1
C 15 174 3004641 6766.07 1634 1625 443.8
C 15 232 2081427 4685.99 1634 1625 443.8
C 15 214 1717000 3864.9 1634 1625 443.8
D 7 61 9308543 23689.87 1396 1344 392.9
D 15 184 6025944 15334.58 1396 1344 392.9
D 7 60 1791711 4557.07 1396 1344 392.9

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