ASTROSAT CZTI

Data Quality Report

Orbit 47879

Creation date: 2024-08-05T06:13:24.104533
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_053T01_9000006370_47879cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47879cztM0_level2_quad_clean.evt
Size (bytes)550,232,640110,629,440
Size524.7 MB 105.5 MB
Events in quadrant A6,949,546730,282
Events in quadrant B3,179,808779,636
Events in quadrant C3,046,120748,090
Events in quadrant D6,662,426615,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250502
B0143462
C0140623
D0246792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68402864.181287%
B6840540.789474%
C6839240.350928%
D684083012.134503%

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 9015 6842 100 100 1.11% 1.46%
B 9015 6842 12 12 0.13% 0.18%
C 9014 6841 11 11 0.12% 0.16%
D 9015 6842 735 735 8.15% 10.74%

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 4036560 26211.35 744 728 154.0
A 13 248 17003 105.7 744 728 154.0
A 0 31 13983 86.09 744 728 154.0
B 5 255 70412 475.3 757 734 146.6
B 4 171 27417 182.01 757 734 146.6
B 0 198 27330 181.42 757 734 146.6
C 14 254 66953 373.92 755 760 177.0
C 5 4 19374 105.15 755 760 177.0
C 12 2 8204 42.05 755 760 177.0
D 2 37 2917737 16429.06 714 695 177.6
D 2 165 408431 2296.41 714 695 177.6
D 7 96 268510 1508.36 714 695 177.6

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