ASTROSAT CZTI

Data Quality Report

Orbit 15371

Creation date: 2024-06-27T17:07:41.359039
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/AS1G08_037T01_9000002264_15371cztM0_level2.evt modeM0/AS1G08_037T01_9000002264_15371cztM0_level2_quad_clean.evt
Size (bytes)471,997,440106,830,720
Size450.1 MB 101.9 MB
Events in quadrant A3,024,575739,960
Events in quadrant B3,190,770740,151
Events in quadrant C3,125,860711,916
Events in quadrant D4,562,700641,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125702
B0130761
C0130591
D0172401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5748801.391788%
B57481031.791928%
C5748681.183020%
D574868511.917189%

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 7039 5749 2 2 0.03% 0.03%
B 7039 5749 7 7 0.10% 0.12%
C 7039 5749 0 0 0.00% 0.00%
D 7039 5749 524 524 7.44% 9.11%

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 10743 63.55 779 765 157.0
A 13 248 9429 55.18 779 765 157.0
A 0 226 7169 40.78 779 765 157.0
B 4 173 110515 760.11 762 745 144.4
B 4 48 36637 248.54 762 745 144.4
B 12 111 15673 103.37 762 745 144.4
C 3 233 234311 1387.67 738 744 168.3
C 8 222 5558 28.6 738 744 168.3
C 13 61 5338 27.29 738 744 168.3
D 1 255 1273774 7406.18 714 693 171.9
D 9 68 361031 2096.28 714 693 171.9
D 2 33 83256 480.31 714 693 171.9

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