ASTROSAT CZTI

Data Quality Report

Orbit 44871

Creation date: 2024-06-27T23:07:27.589534
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_017T01_9000006028_44871cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44871cztM0_level2_quad_clean.evt
Size (bytes)611,383,680133,223,040
Size583.1 MB 127.1 MB
Events in quadrant A5,966,163896,183
Events in quadrant B4,062,437923,569
Events in quadrant C3,932,939880,487
Events in quadrant D8,025,411755,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249450
B0181070
C0180461
D0296250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8318700.841548%
B8319760.913571%
C8318390.468863%
D83187488.992546%

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 8318 8318 3 3 0.04% 0.04%
B 8319 8319 19 19 0.23% 0.23%
C 8318 8318 19 19 0.23% 0.23%
D 8318 8318 482 482 5.79% 5.79%

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 2269518 11468.03 940 920 197.8
A 7 3 27659 135.17 940 920 197.8
A 13 248 20244 97.69 940 920 197.8
B 0 219 122188 648.37 941 909 187.1
B 5 255 114994 609.91 941 909 187.1
B 0 155 61890 326.01 941 909 187.1
C 1 3 206173 939.67 923 924 218.4
C 12 2 64731 292.12 923 924 218.4
C 12 250 21553 94.44 923 924 218.4
D 1 52 1938372 8650.34 887 860 224.0
D 13 174 844374 3766.01 887 860 224.0
D 2 249 751020 3349.21 887 860 224.0

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