ASTROSAT CZTI

Data Quality Report

Orbit 45666

Creation date: 2024-06-27T23:14:46.882420
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/AS1A13_093T12_9000006118_45666cztM0_level2.fits modeM0/AS1A13_093T12_9000006118_45666cztM0_level2_quad_clean.evt
Size (bytes)520,626,240119,658,240
Size496.5 MB 114.1 MB
Events in quadrant A6,413,987782,803
Events in quadrant B4,176,092821,208
Events in quadrant C3,477,768787,968
Events in quadrant D4,633,166718,714

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242894
B0174393
C0157423
D0188063

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73592883.913575%
B73591752.378040%
C7359931.263759%
D73591752.378040%

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 7714 7361 13 13 0.17% 0.18%
B 7714 7361 47 47 0.61% 0.64%
C 7714 7361 37 37 0.48% 0.50%
D 7714 7360 113 113 1.46% 1.54%

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 3187253 18750.87 819 800 169.9
A 10 248 32464 186.33 819 800 169.9
A 0 243 12884 71.11 819 800 169.9
B 12 16 432112 2686.68 821 795 160.5
B 0 183 75968 468.25 821 795 160.5
B 0 189 61544 378.41 821 795 160.5
C 14 254 227737 1192.56 809 811 190.3
C 9 54 70862 368.14 809 811 190.3
C 12 250 8719 41.56 809 811 190.3
D 1 52 546815 2692.88 806 780 202.8
D 13 249 471907 2323.46 806 780 202.8
D 2 249 144177 707.19 806 780 202.8

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