ASTROSAT CZTI

Data Quality Report

Orbit 46131

Creation date: 2024-06-27T23:19:29.146891
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_098T02_9000006174_46131cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46131cztM0_level2_quad_clean.evt
Size (bytes)705,735,360122,454,720
Size673.0 MB 116.8 MB
Events in quadrant A7,449,152824,426
Events in quadrant B3,943,185872,448
Events in quadrant C4,033,018851,348
Events in quadrant D10,076,858600,733

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273551
B0171441
C0177231
D0354961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140101566683176140097538228270
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80293073.823639%
B80281822.267065%
C80281011.258097%
D8028206925.772297%

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 8029 8029 17 17 0.21% 0.21%
B 8028 8028 12 12 0.15% 0.15%
C 8028 8028 41 41 0.51% 0.51%
D 8028 8028 1506 1506 18.76% 18.76%

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 3266779 17008.12 923 904 192.0
A 9 191 490728 2550.92 923 904 192.0
A 0 247 40827 207.91 923 904 192.0
B 3 112 75837 395.25 934 905 189.6
B 5 172 55568 288.34 934 905 189.6
B 0 190 27335 139.41 934 905 189.6
C 12 2 265386 1208.04 920 924 218.9
C 14 254 163323 741.82 920 924 218.9
C 3 233 15967 68.72 920 924 218.9
D 1 52 1358333 6602.29 804 778 205.6
D 13 249 1293145 6285.26 804 778 205.6
D 2 249 1272861 6186.61 804 778 205.6

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