ASTROSAT CZTI

Data Quality Report

Orbit 32278

Creation date: 2024-06-27T20:38:22.711828
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/AS1A09_131T01_9000004696_32278cztM0_level2.evt modeM0/AS1A09_131T01_9000004696_32278cztM0_level2_quad_clean.evt
Size (bytes)593,444,160103,340,160
Size566.0 MB 98.6 MB
Events in quadrant A3,077,645680,924
Events in quadrant B5,335,092685,846
Events in quadrant C3,611,374687,882
Events in quadrant D5,542,365655,419

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131432
B0202741
C0148421
D0208511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6003400.666333%
B60031702.831917%
C60032273.781443%
D60033716.180243%

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 7283 6004 2 2 0.03% 0.03%
B 7283 6003 40 40 0.55% 0.67%
C 7283 6004 15 15 0.21% 0.25%
D 7283 6004 197 197 2.70% 3.28%

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 13 6 16654 102.0 787 772 155.7
A 13 254 11577 69.39 787 772 155.7
A 0 6 11286 67.52 787 772 155.7
B 6 159 1880733 13011.2 784 765 144.5
B 5 172 156482 1077.71 784 765 144.5
B 0 190 114034 783.93 784 765 144.5
C 3 233 211726 1193.25 770 778 176.8
C 14 238 155576 875.63 770 778 176.8
C 0 10 91025 510.49 770 778 176.8
D 8 195 1993552 11092.35 760 741 179.7
D 12 6 360461 2002.27 760 741 179.7
D 13 249 143815 796.38 760 741 179.7

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