ASTROSAT CZTI

Data Quality Report

Orbit 12056

Creation date: 2024-06-27T16:21:48.895243
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/AS1A03_085T02_9000001784_12056cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12056cztM0_level2_quad_clean.evt
Size (bytes)620,352,000103,308,480
Size591.6 MB 98.5 MB
Events in quadrant A3,450,375715,157
Events in quadrant B7,722,296617,873
Events in quadrant C3,112,034688,954
Events in quadrant D4,074,315664,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143023
B0272842
C0133622
D0160692

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63182013.181387%
B6318184629.218107%
C6318851.345362%
D63181802.849003%

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 8814 6319 10 10 0.11% 0.16%
B 8814 6319 1383 1383 15.69% 21.89%
C 8814 6319 1 1 0.01% 0.02%
D 8814 6319 58 58 0.66% 0.92%

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 1 162 67272 391.98 839 825 169.5
A 9 143 39196 226.35 839 825 169.5
A 1 178 29736 170.55 839 825 169.5
B 0 85 3301791 22796.89 759 744 144.8
B 4 239 1146437 7912.11 759 744 144.8
B 4 206 169079 1162.51 759 744 144.8
C 14 234 6815 32.76 796 800 183.6
C 13 61 5833 27.41 796 800 183.6
C 12 4 1917 6.08 796 800 183.6
D 1 52 666812 3538.12 798 778 188.2
D 8 195 296281 1569.78 798 778 188.2
D 10 50 57377 300.67 798 778 188.2

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