ASTROSAT CZTI

Data Quality Report

Orbit 36583

Creation date: 2024-06-27T21:28:45.287951
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/AS1A11_097T17_9000005222_36583cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36583cztM0_level2_quad_clean.evt
Size (bytes)413,236,80072,648,000
Size394.1 MB 69.3 MB
Events in quadrant A2,642,640469,816
Events in quadrant B2,648,297466,994
Events in quadrant C3,216,611456,432
Events in quadrant D3,649,698438,031

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111932
B0112181
C0127101
D0143241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5258430.817801%
B5258460.874857%
C52581172.225181%
D52581753.328262%

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 6902 5259 34 34 0.49% 0.65%
B 6902 5259 31 31 0.45% 0.59%
C 6902 5259 102 102 1.48% 1.94%
D 6902 5259 159 159 2.30% 3.02%

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 10 83 167660 1378.61 598 587 121.2
A 15 223 148444 1220.04 598 587 121.2
A 9 143 11841 92.86 598 587 121.2
B 5 255 114603 1000.13 594 579 114.0
B 5 172 47339 410.14 594 579 114.0
B 0 213 44850 388.31 594 579 114.0
C 0 10 310938 2288.84 584 590 135.6
C 14 254 303912 2237.02 584 590 135.6
C 15 214 220133 1619.15 584 590 135.6
D 12 235 312767 2204.65 582 566 141.6
D 13 249 179250 1261.8 582 566 141.6
D 12 227 129753 912.27 582 566 141.6

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