ASTROSAT CZTI

Data Quality Report

Orbit 50368

Creation date: 2025-01-20T10:30:11.463136
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/AS1C09_003T01_9000006442_50368cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50368cztM0_level2_quad_clean.evt
Size (bytes)1,085,875,20076,158,720
Size1.0 GB 72.6 MB
Events in quadrant A4,600,557673,748
Events in quadrant B6,514,248630,872
Events in quadrant C12,095,397430,399
Events in quadrant D16,424,28465,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186120
B0243490
C0409841
D0537860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7257961.322861%
B7257107714.840843%
C7256289439.884234%
D7257667691.993937%

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 7257 7257 70 70 0.96% 0.96%
B 7257 7256 764 764 10.53% 10.53%
C 7256 7256 2442 2442 33.65% 33.65%
D 7257 7255 5146 5146 70.91% 70.93%

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 270170 1406.64 773 753 191.5
A 3 14 173043 899.53 773 753 191.5
A 3 130 168415 875.37 773 753 191.5
B 12 0 1550769 10272.31 711 685 150.9
B 10 44 459592 3041.15 711 685 150.9
B 4 170 434884 2877.41 711 685 150.9
C 0 208 1514427 8517.69 640 635 177.7
C 15 127 1392196 7829.93 640 635 177.7
C 15 196 1013080 5696.75 640 635 177.7
D 7 61 8654921 80325.95 355 341 107.7
D 12 6 1171071 10865.92 355 341 107.7
D 7 126 913016 8470.83 355 341 107.7

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