ASTROSAT CZTI

Data Quality Report

Orbit 38419

Creation date: 2024-06-27T21:52:30.214232
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/AS1A12_018T01_9000005386_38419cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38419cztM0_level2_quad_clean.evt
Size (bytes)1,408,504,320306,480,960
Size1.3 GB 292.3 MB
Events in quadrant A10,017,4882,176,567
Events in quadrant B9,295,6342,218,992
Events in quadrant C8,710,9492,097,955
Events in quadrant D22,759,6221,577,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0790
B0790
C0790
D0790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401825
B0386374
C0360904
D0798184

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175332361.346033%
B175331300.741459%
C17533470.268066%
D17533374521.359722%

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 25513 17537 166 166 0.65% 0.95%
B 25513 17537 73 73 0.29% 0.42%
C 25513 17537 33 33 0.13% 0.19%
D 25513 17537 3562 3562 13.96% 20.31%

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 10 83 1160252 2896.77 2025 1985 399.8
A 13 248 551030 1373.13 2025 1985 399.8
A 15 223 208999 517.73 2025 1985 399.8
B 0 183 491056 1313.96 2010 1957 372.2
B 4 232 447884 1197.98 2010 1957 372.2
B 4 171 118254 312.43 2010 1957 372.2
C 15 214 734863 1624.2 1982 1998 451.2
C 14 254 176841 387.49 1982 1998 451.2
C 0 10 49396 105.05 1982 1998 451.2
D 12 235 11293748 25023.41 1854 1799 451.3
D 2 250 1284543 2842.61 1854 1799 451.3
D 12 2 872218 1928.88 1854 1799 451.3

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