ASTROSAT CZTI

Data Quality Report

Orbit 18264

Creation date: 2024-06-27T17:47:33.986711
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/AS1A05_019T01_9000002718_18264cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18264cztM0_level2_quad_clean.evt
Size (bytes)475,110,72066,836,160
Size453.1 MB 63.7 MB
Events in quadrant A3,186,259403,427
Events in quadrant B3,252,929411,769
Events in quadrant C3,172,288386,793
Events in quadrant D4,340,402372,699

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134512
B0136362
C0134442
D0174092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6428170.264468%
B6429250.388863%
C6429500.777726%
D64291672.597605%

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 7623 6429 0 0 0.00% 0.00%
B 7624 6430 0 0 0.00% 0.00%
C 7624 6430 0 0 0.00% 0.00%
D 7624 6430 129 129 1.69% 2.01%

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 4 2 24134 142.41 816 798 163.9
A 15 174 22604 133.08 816 798 163.9
A 0 226 7091 38.4 816 798 163.9
B 7 220 36230 229.68 818 799 154.3
B 12 111 18173 112.63 818 799 154.3
B 11 111 16008 98.59 818 799 154.3
C 14 238 122595 665.64 781 786 183.0
C 13 61 5418 25.31 781 786 183.0
C 3 233 4126 18.25 781 786 183.0
D 1 52 791671 4145.38 779 756 190.8
D 7 238 525037 2747.88 779 756 190.8
D 2 234 26324 134.01 779 756 190.8

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