ASTROSAT CZTI

Data Quality Report

Orbit 50571

Creation date: 2025-02-02T16:45:35.996917
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/AS1T05_239T01_9000006444_50571cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50571cztM0_level2_quad_clean.evt
Size (bytes)885,741,12088,683,840
Size844.7 MB 84.6 MB
Events in quadrant A4,315,461666,742
Events in quadrant B6,093,089700,331
Events in quadrant C13,810,725243,071
Events in quadrant D8,003,651566,920

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176030
B0232930
C0460680
D0288650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72941271.741157%
B72944716.457362%
C7295491067.306374%
D72956709.184373%

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 7294 7294 88 88 1.21% 1.21%
B 7294 7294 255 255 3.50% 3.50%
C 7295 7295 3969 3969 54.41% 54.41%
D 7295 7295 711 711 9.75% 9.75%

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 12 250 269792 1447.39 755 735 185.9
A 4 3 242799 1302.18 755 735 185.9
A 11 3 132863 710.78 755 735 185.9
B 4 170 1499247 9505.89 739 713 157.6
B 0 229 574416 3639.26 739 713 157.6
B 7 0 393036 2488.68 739 713 157.6
C 15 214 3042669 23240.32 465 462 130.9
C 15 196 2847713 21750.99 465 462 130.9
C 15 236 2554118 19508.13 465 462 130.9
D 7 61 1893260 9751.66 706 685 194.1
D 14 67 621173 3197.12 706 685 194.1
D 6 42 407194 2094.57 706 685 194.1

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