ASTROSAT CZTI

Data Quality Report

Orbit 24341

Creation date: 2024-06-27T19:04:57.461603
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/AS1A07_145T01_9000003594_24341cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24341cztM0_level2_quad_clean.evt
Size (bytes)566,245,44080,605,440
Size540.0 MB 76.9 MB
Events in quadrant A3,427,706495,058
Events in quadrant B3,485,943504,550
Events in quadrant C4,838,575483,103
Events in quadrant D4,922,595470,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146722
B0148062
C0191452
D0194492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7001971.385516%
B70011131.614055%
C70022153.070551%
D70022393.413310%

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 8641 7003 1 1 0.01% 0.01%
B 8641 7003 1 1 0.01% 0.01%
C 8642 7004 0 0 0.00% 0.00%
D 8642 7004 88 88 1.02% 1.26%

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 13 254 10325 52.7 886 865 179.5
A 3 137 8142 40.54 886 865 179.5
A 0 226 7836 38.83 886 865 179.5
B 0 190 36850 213.88 880 857 168.3
B 12 111 20513 116.8 880 857 168.3
B 11 111 18413 104.32 880 857 168.3
C 7 247 1338197 6778.53 848 853 197.3
C 14 238 132657 668.07 848 853 197.3
C 2 16 49749 247.84 848 853 197.3
D 8 195 819130 3899.34 858 831 209.9
D 7 238 427765 2034.42 858 831 209.9
D 1 52 340289 1617.58 858 831 209.9

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