ASTROSAT CZTI

Data Quality Report

Orbit 46150

Creation date: 2024-06-27T23:19:43.310158
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_092T03_9000006176_46150cztM0_level2.fits modeM0/AS1A13_092T03_9000006176_46150cztM0_level2_quad_clean.evt
Size (bytes)1,050,183,36095,826,240
Size1001.5 MB 91.4 MB
Events in quadrant A6,979,907813,790
Events in quadrant B21,263,7426,254
Events in quadrant C3,727,414818,974
Events in quadrant D6,291,127712,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253292
B0685302
C0166922
D0241112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79063354.237288%
B7905785999.418090%
C79051311.657179%
D79056528.247944%

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 9176 7908 12 12 0.13% 0.15%
B 9174 7904 7550 7550 82.30% 95.52%
C 9175 7907 10 10 0.11% 0.13%
D 9175 7907 416 416 4.53% 5.26%

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 10 83 3439245 18387.78 896 874 187.0
A 0 247 33129 172.49 896 874 187.0
A 10 255 18207 92.69 896 874 187.0
B 10 246 20528635 800982.99 125 121 25.6
B 3 112 198646 7746.06 125 121 25.6
B 5 172 13282 513.52 125 121 25.6
C 12 2 212815 1008.43 888 889 210.2
C 3 233 27840 128.24 888 889 210.2
C 2 14 16118 72.46 888 889 210.2
D 5 235 1263627 5817.65 864 835 217.1
D 2 37 536506 2467.82 864 835 217.1
D 2 249 390193 1793.76 864 835 217.1

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