ASTROSAT CZTI

Data Quality Report

Orbit 20240224_A13_042T03_9000006094_level2

Creation date: 2024-02-27T16:28:17.941768
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/AS1A13_042T03_9000006094cztM0_level2.fits modeM0/AS1A13_042T03_9000006094cztM0_level2_quad_clean.evt
Size (bytes)240,575,040244,748,160
Size229.4 MB 233.4 MB
Events in quadrant A1,407,6101,422,603
Events in quadrant B1,383,0381,468,059
Events in quadrant C1,421,4841,401,258
Events in quadrant D1,208,0841,254,712

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0845330
B0582100
C0586030
D0697000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271176752.489213%
B271174531.670539%
C271183841.416034%
D271187202.655063%

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 34306 27118 0 0 0.00% 0.00%
B 34306 27118 0 0 0.00% 0.00%
C 34307 27118 0 0 0.00% 0.00%
D 34307 27117 0 0 0.00% 0.00%

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 7 110 1185 8.87 365 340 95.3
A 15 236 1136 8.35 365 340 95.3
A 7 109 1066 7.62 365 340 95.3
B 2 9 1321 12.92 365 345 75.5
B 2 8 1084 9.79 365 345 75.5
B 3 17 948 7.98 365 345 75.5
C 3 202 1107 7.62 375 347 99.7
C 1 81 1094 7.49 375 347 99.7
C 1 80 1060 7.15 375 347 99.7
D 12 6 914 6.07 346 314 98.9
D 10 113 887 5.79 346 314 98.9
D 3 31 885 5.77 346 314 98.9

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