ASTROSAT CZTI

Data Quality Report

Orbit 46679

Creation date: 2024-06-27T23:26:24.155481
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_092T19_9000006252_46679cztM0_level2.fits modeM0/AS1A13_092T19_9000006252_46679cztM0_level2_quad_clean.evt
Size (bytes)573,102,720105,920,640
Size546.6 MB 101.0 MB
Events in quadrant A6,561,013712,711
Events in quadrant B3,473,305752,990
Events in quadrant C2,999,900732,371
Events in quadrant D7,651,267533,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238322
B0149922
C0140613
D0274762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68202583.782991%
B68201231.803519%
C6819390.571931%
D6819149921.982695%

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 7850 6821 55 55 0.70% 0.81%
B 7850 6821 19 19 0.24% 0.28%
C 7849 6820 7 7 0.09% 0.10%
D 7849 6820 1263 1263 16.09% 18.52%

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 3552308 22753.55 752 735 156.1
A 9 191 60441 382.51 752 735 156.1
A 0 247 19848 122.45 752 735 156.1
B 4 171 129899 852.57 765 741 151.5
B 0 189 94127 616.44 765 741 151.5
B 0 198 67400 440.01 765 741 151.5
C 14 254 26016 141.97 751 754 177.9
C 9 54 14848 79.2 751 754 177.9
C 1 3 13040 69.04 751 754 177.9
D 1 52 4329876 25579.26 667 645 169.2
D 13 249 401176 2366.54 667 645 169.2
D 2 249 92537 542.94 667 645 169.2

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