ASTROSAT CZTI

Data Quality Report

Orbit 47920

Creation date: 2024-08-08T02:06:34.542396
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_025T02_9000006380_47920cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47920cztM0_level2_quad_clean.evt
Size (bytes)578,050,560102,424,320
Size551.3 MB 97.7 MB
Events in quadrant A8,573,297626,427
Events in quadrant B3,326,599733,775
Events in quadrant C3,087,540704,323
Events in quadrant D5,886,100565,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300642
B0145232
C0142112
D0223465

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6757108216.013024%
B6757861.272754%
C6757620.917567%
D6755101114.966691%

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 7712 6758 688 688 8.92% 10.18%
B 7712 6758 29 29 0.38% 0.43%
C 7712 6758 34 34 0.44% 0.50%
D 7712 6757 860 860 11.15% 12.73%

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 3954232 26694.13 711 695 148.1
A 13 248 1542320 10408.99 711 695 148.1
A 0 31 321140 2163.63 711 695 148.1
B 5 255 172450 1160.73 746 722 147.9
B 0 200 50689 337.73 746 722 147.9
B 4 171 47971 319.36 746 722 147.9
C 12 2 156634 901.79 734 738 172.9
C 14 254 50408 287.32 734 738 172.9
C 12 250 6624 34.05 734 738 172.9
D 2 37 2425410 13837.57 696 673 175.2
D 2 249 423136 2410.93 696 673 175.2
D 11 224 141492 803.63 696 673 175.2

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