ASTROSAT CZTI

Data Quality Report

Orbit 46420

Creation date: 2024-06-27T23:23:00.217861
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/AS1A13_033T03_9000006206_46420cztM0_level2.fits modeM0/AS1A13_033T03_9000006206_46420cztM0_level2_quad_clean.evt
Size (bytes)493,165,440122,184,000
Size470.3 MB 116.5 MB
Events in quadrant A6,570,954800,670
Events in quadrant B3,666,240828,096
Events in quadrant C3,512,264801,257
Events in quadrant D3,915,266741,170

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241951
B0161291
C0158141
D0168931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76023915.143383%
B76023234.248882%
C76031852.433250%
D76032363.104038%

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 7632 7604 1 1 0.01% 0.01%
B 7632 7604 6 6 0.08% 0.08%
C 7633 7605 1 1 0.01% 0.01%
D 7633 7605 42 42 0.55% 0.55%

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 10 83 3030430 16368.79 890 870 185.1
A 0 247 68061 363.03 890 870 185.1
A 13 254 17110 87.75 890 870 185.1
B 0 245 54765 302.02 889 860 178.5
B 0 190 54715 301.74 889 860 178.5
B 5 171 27533 149.44 889 860 178.5
C 9 54 36093 170.42 882 884 206.6
C 14 254 16583 75.99 882 884 206.6
C 3 233 16156 73.92 882 884 206.6
D 13 249 235063 1044.63 884 855 224.2
D 2 249 162650 721.65 884 855 224.2
D 3 13 80174 353.78 884 855 224.2

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