ASTROSAT CZTI

Data Quality Report

Orbit 51184

Creation date: 2025-03-17T08:21:38.561078
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/AS1C07_001T01_9000006454_51184cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51184cztM0_level2_quad_clean.evt
Size (bytes)2,309,757,120215,208,000
Size2.2 GB 205.2 MB
Events in quadrant A14,526,0381,572,080
Events in quadrant B15,456,4271,640,218
Events in quadrant C34,675,076770,744
Events in quadrant D19,434,1801,270,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556222
B0584643
C01155462
D0705442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1828612857.027234%
B18286205611.243574%
C182861022755.928032%
D18286308316.859893%

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 19381 18288 778 778 4.01% 4.25%
B 19381 18288 1139 1139 5.88% 6.23%
C 19381 18285 9496 9496 49.00% 51.93%
D 19381 18288 2630 2630 13.57% 14.38%

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 13 248 1281107 2724.2 1887 1838 469.6
A 12 3 1254883 2668.36 1887 1838 469.6
A 14 254 1045787 2223.09 1887 1838 469.6
B 5 172 1755997 4523.09 1832 1767 387.8
B 12 32 1690008 4352.95 1832 1767 387.8
B 10 60 1012462 2605.97 1832 1767 387.8
C 12 247 17115082 45387.92 1371 1361 377.1
C 4 12 3414758 9052.79 1371 1361 377.1
C 10 69 3113042 8252.6 1371 1361 377.1
D 2 62 2415318 4914.95 1760 1705 491.1
D 3 12 2311930 4704.42 1760 1705 491.1
D 7 126 1553610 3160.21 1760 1705 491.1

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