ASTROSAT CZTI

Data Quality Report

Orbit 51310

Creation date: 2025-03-24T10:51:49.518589
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_001T03_9000006456_51310cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51310cztM0_level2_quad_clean.evt
Size (bytes)825,739,20092,733,120
Size787.5 MB 88.4 MB
Events in quadrant A8,491,615614,182
Events in quadrant B4,191,602714,373
Events in quadrant C8,343,029534,623
Events in quadrant D8,982,339441,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303631
B0175571
C0297491
D0320021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72177129.865595%
B72171942.688098%
C7217159822.142164%
D7217206828.654566%

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 7232 7218 558 558 7.72% 7.73%
B 7232 7218 115 115 1.59% 1.59%
C 7232 7218 1385 1385 19.15% 19.19%
D 7232 7218 1816 1816 25.11% 25.16%

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 12 3 2961287 16661.77 723 706 177.7
A 12 250 1540994 8668.54 723 706 177.7
A 12 194 339846 1908.64 723 706 177.7
B 7 252 360008 2282.98 741 715 157.4
B 5 185 255891 1621.41 741 715 157.4
B 10 254 133157 841.55 741 715 157.4
C 4 12 4004253 21979.88 655 650 182.1
C 14 242 575710 3157.09 655 650 182.1
C 3 233 351110 1924.03 655 650 182.1
D 8 176 4710085 26351.13 639 613 178.7
D 12 2 489997 2738.27 639 613 178.7
D 10 181 416772 2328.55 639 613 178.7

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