ASTROSAT CZTI

Data Quality Report

Orbit 15121

Creation date: 2024-06-27T17:04:02.575650
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_046T09_9000002226_15121cztM0_level2.evt modeM0/AS1G08_046T09_9000002226_15121cztM0_level2_quad_clean.evt
Size (bytes)469,848,96093,314,880
Size448.1 MB 89.0 MB
Events in quadrant A2,980,283606,757
Events in quadrant B3,295,219608,063
Events in quadrant C4,150,518593,818
Events in quadrant D3,370,352572,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132903
B0139672
C0166102
D0146262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6378270.423330%
B6378530.830981%
C63781792.806522%
D63781352.116651%

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 7483 6374 0 0 0.00% 0.00%
B 7483 6374 24 24 0.32% 0.38%
C 7483 6374 125 125 1.67% 1.96%
D 7483 6374 105 105 1.40% 1.65%

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 12 189 45953 295.6 760 742 152.9
A 0 226 6776 39.45 760 742 152.9
A 9 143 6285 36.24 760 742 152.9
B 10 245 118075 825.3 761 741 142.2
B 3 64 115992 810.65 761 741 142.2
B 3 209 28480 195.11 761 741 142.2
C 4 254 671083 3923.27 739 743 170.9
C 3 233 587269 3432.74 739 743 170.9
C 13 61 5240 26.32 739 743 170.9
D 1 255 243459 1350.86 739 715 179.7
D 10 70 112360 621.3 739 715 179.7
D 7 38 67237 370.19 739 715 179.7

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