ASTROSAT CZTI

Data Quality Report

Orbit 26296

Creation date: 2024-06-27T19:27:08.780653
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/AS1A09_143T03_9000003794_26296cztM0_level2.evt modeM0/AS1A09_143T03_9000003794_26296cztM0_level2_quad_clean.evt
Size (bytes)493,214,40077,345,280
Size470.4 MB 73.8 MB
Events in quadrant A3,446,982481,072
Events in quadrant B3,218,568492,353
Events in quadrant C4,373,082458,054
Events in quadrant D3,464,851464,973

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143370
B0135690
C0170700
D0145610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63841001.566416%
B6384520.814536%
C63854266.671887%
D63851472.302271%

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 7419 6385 30 30 0.40% 0.47%
B 7419 6385 0 0 0.00% 0.00%
C 7420 6386 149 149 2.01% 2.33%
D 7420 6386 95 95 1.28% 1.49%

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 0 13 302129 1841.06 815 799 163.7
A 13 254 11298 64.15 815 799 163.7
A 3 137 7465 40.73 815 799 163.7
B 0 230 24004 148.47 816 796 156.3
B 12 111 18790 115.12 816 796 156.3
B 11 111 16540 100.72 816 796 156.3
C 4 254 1032251 5662.0 772 778 182.2
C 3 233 210048 1148.73 772 778 182.2
C 14 238 122568 668.53 772 778 182.2
D 12 233 382431 2016.42 791 775 189.3
D 1 52 35952 185.85 791 775 189.3
D 2 234 29352 150.98 791 775 189.3

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