ASTROSAT CZTI

Data Quality Report

Orbit 51019

Creation date: 2025-03-04T20:26:54.971339
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_001T02_9000006452_51019cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51019cztM0_level2_quad_clean.evt
Size (bytes)770,158,08089,300,160
Size734.5 MB 85.2 MB
Events in quadrant A9,196,263586,160
Events in quadrant B5,064,114660,783
Events in quadrant C8,999,076430,029
Events in quadrant D4,719,542548,546

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321341
B0197191
C0314791
D0188911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A685690413.185531%
B68554746.914661%
C6856224832.788798%
D68564186.096849%

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 7276 6857 479 479 6.58% 6.99%
B 7275 6856 151 151 2.08% 2.20%
C 7276 6857 1958 1958 26.91% 28.55%
D 7276 6857 294 294 4.04% 4.29%

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 4 4 3877875 22367.47 697 680 173.3
A 12 3 1439894 8302.8 697 680 173.3
A 10 253 358348 2063.38 697 680 173.3
B 4 171 587740 3944.79 703 680 148.8
B 4 81 546358 3666.72 703 680 148.8
B 0 172 319264 2140.74 703 680 148.8
C 15 1 4924338 31323.04 575 569 157.2
C 15 229 663591 4217.88 575 569 157.2
C 4 5 293719 1864.9 575 569 157.2
D 8 176 492421 2599.27 683 658 189.2
D 10 172 324088 1709.53 683 658 189.2
D 2 216 297650 1569.78 683 658 189.2

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