ASTROSAT CZTI

Data Quality Report

Orbit 21652

Creation date: 2024-06-27T18:30:40.818209
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/AS1A06_002T02_9000003206_21652cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21652cztM0_level2_quad_clean.evt
Size (bytes)502,413,12095,895,360
Size479.1 MB 91.5 MB
Events in quadrant A3,021,984627,663
Events in quadrant B3,332,451652,608
Events in quadrant C3,116,678615,832
Events in quadrant D5,321,259572,707

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129892
B0139102
C0132032
D0200042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242230.368472%
B6242671.073374%
C6242751.201538%
D62415989.581798%

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 7492 6243 0 0 0.00% 0.00%
B 7492 6243 28 28 0.37% 0.45%
C 7492 6243 0 0 0.00% 0.00%
D 7491 6242 468 468 6.25% 7.50%

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 13 254 7954 46.33 784 768 155.1
A 0 226 6713 38.33 784 768 155.1
A 3 137 6403 36.33 784 768 155.1
B 3 64 146200 989.88 789 769 146.9
B 0 230 29246 193.83 789 769 146.9
B 0 219 17832 116.14 789 769 146.9
C 14 238 121337 680.09 763 769 177.3
C 9 54 13165 69.92 763 769 177.3
C 10 22 6782 33.92 763 769 177.3
D 1 52 1692381 9597.08 728 707 176.3
D 7 238 650793 3688.02 728 707 176.3
D 9 68 108774 613.08 728 707 176.3

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