ASTROSAT CZTI

Data Quality Report

Orbit 50862

Creation date: 2025-02-22T12:16:09.960187
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_9000006450_50862cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50862cztM0_level2_quad_clean.evt
Size (bytes)938,413,44090,648,000
Size894.9 MB 86.4 MB
Events in quadrant A5,421,666684,843
Events in quadrant B8,181,908648,219
Events in quadrant C11,491,921386,492
Events in quadrant D9,046,958489,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216020
B0297750
C0394360
D0322580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76864325.620609%
B7686154620.114494%
C7686367147.762165%
D7687192325.016261%

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 7686 7686 292 292 3.80% 3.80%
B 7685 7685 1052 1052 13.69% 13.69%
C 7686 7686 2530 2530 32.92% 32.92%
D 7687 7687 1864 1864 24.25% 24.25%

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 3 130 584169 2933.42 794 772 198.9
A 9 248 448936 2253.44 794 772 198.9
A 9 13 253565 1271.08 794 772 198.9
B 5 172 3917621 24108.68 753 725 162.5
B 4 206 499118 3067.63 753 725 162.5
B 10 247 307762 1889.82 753 725 162.5
C 4 210 4212933 25410.95 598 594 165.8
C 15 229 3293596 19865.05 598 594 165.8
C 12 247 204231 1228.44 598 594 165.8
D 15 185 3944104 21291.97 660 637 185.2
D 1 47 390880 2107.04 660 637 185.2
D 2 249 334741 1803.93 660 637 185.2

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