ASTROSAT CZTI

Data Quality Report

Orbit 50603

Creation date: 2025-02-04T21:28:06.717846
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_50603cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50603cztM0_level2_quad_clean.evt
Size (bytes)2,350,555,200223,413,120
Size2.2 GB 213.1 MB
Events in quadrant A12,832,2731,662,044
Events in quadrant B29,939,6451,218,974
Events in quadrant C24,840,5771,180,179
Events in quadrant D17,949,2681,403,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0508095
B01020482
C0868792
D0666212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188337223.833696%
B18834720938.276521%
C18834548529.122863%
D1883418189.652756%

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 19653 18835 521 521 2.65% 2.77%
B 19654 18835 5045 5045 25.67% 26.79%
C 19654 18834 4518 4518 22.99% 23.99%
D 19654 18835 1321 1321 6.72% 7.01%

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 80 1093513 2205.39 1984 1934 495.0
A 12 250 842336 1697.92 1984 1934 495.0
A 4 3 401797 807.87 1984 1934 495.0
B 4 170 11656254 31590.48 1718 1653 368.9
B 5 172 4450500 12058.86 1718 1653 368.9
B 5 32 2350464 6366.59 1718 1653 368.9
C 15 158 9753841 20189.89 1705 1692 483.0
C 13 235 1326906 2743.59 1705 1692 483.0
C 13 250 982247 2030.04 1705 1692 483.0
D 2 165 1760644 3411.06 1873 1812 515.6
D 14 67 1412699 2736.26 1873 1812 515.6
D 7 60 1331049 2577.91 1873 1812 515.6

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