ASTROSAT CZTI

Data Quality Report

Orbit 51179

Creation date: 2025-03-15T16:41:02.746863
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_51179cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51179cztM0_level2_quad_clean.evt
Size (bytes)800,634,24095,711,040
Size763.5 MB 91.3 MB
Events in quadrant A7,638,675592,925
Events in quadrant B6,112,341683,876
Events in quadrant C9,230,664570,081
Events in quadrant D6,089,717541,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277300
B0233020
C0325280
D0235510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7316102614.024057%
B73177159.771764%
C7317139919.119858%
D731796813.229466%

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 7316 7316 629 629 8.60% 8.60%
B 7317 7317 393 393 5.37% 5.37%
C 7317 7316 1425 1425 19.48% 19.48%
D 7317 7317 848 848 11.59% 11.59%

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 7 206 1532178 8408.61 731 714 182.1
A 12 80 863462 4736.98 731 714 182.1
A 12 3 763368 4187.41 731 714 182.1
B 10 60 593803 3725.59 744 716 159.2
B 5 172 461965 2897.42 744 716 159.2
B 5 185 363361 2278.02 744 716 159.2
C 12 247 3384478 17470.43 705 697 193.7
C 4 12 1137509 5869.35 705 697 193.7
C 13 3 440317 2269.75 705 697 193.7
D 2 62 1356029 7026.37 697 673 192.9
D 2 172 692513 3586.61 697 673 192.9
D 8 176 333830 1727.14 697 673 192.9

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