ASTROSAT CZTI

Data Quality Report

Orbit 09971

Creation date: 2024-06-27T15:53:08.892711
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/AS1G07_047T01_9000001424_09971cztM0_level2.evt modeM0/AS1G07_047T01_9000001424_09971cztM0_level2_quad_clean.evt
Size (bytes)733,576,32092,393,280
Size699.6 MB 88.1 MB
Events in quadrant A7,614,895542,155
Events in quadrant B3,763,977634,471
Events in quadrant C2,994,376621,695
Events in quadrant D7,409,173550,180

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268753
B0154512
C0133232
D0265482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429151723.596205%
B64291552.410950%
C6429450.699953%
D64296399.939337%

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 7719 6429 1440 1440 18.66% 22.40%
B 7719 6429 67 67 0.87% 1.04%
C 7719 6429 0 0 0.00% 0.00%
D 7719 6429 585 585 7.58% 9.10%

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 13 251 4729288 32129.36 726 711 147.2
A 8 15 50882 340.89 726 711 147.2
A 15 174 34505 229.62 726 711 147.2
B 4 81 309588 2033.25 803 785 151.9
B 15 32 120999 791.53 803 785 151.9
B 10 245 57299 372.11 803 785 151.9
C 13 61 5863 28.85 765 771 176.5
C 8 222 4086 18.78 765 771 176.5
C 8 208 3765 16.96 765 771 176.5
D 1 52 2811930 14264.23 734 719 197.1
D 2 16 591850 2999.43 734 719 197.1
D 2 33 489915 2482.21 734 719 197.1

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