ASTROSAT CZTI

Data Quality Report

Orbit 15879

Creation date: 2024-06-27T17:14:41.428885
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/AS1A04_143T01_9000002344_15879cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15879cztM0_level2_quad_clean.evt
Size (bytes)490,132,800102,597,120
Size467.4 MB 97.8 MB
Events in quadrant A4,318,386634,665
Events in quadrant B3,474,614703,323
Events in quadrant C3,407,028664,886
Events in quadrant D3,199,620648,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169943
B0144382
C0141992
D0138342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65475107.789827%
B6547791.206660%
C6547811.237208%
D6547250.381854%

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 9313 6551 435 435 4.67% 6.64%
B 9313 6551 1 1 0.01% 0.02%
C 9313 6551 1 1 0.01% 0.02%
D 9313 6551 4 4 0.04% 0.06%

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 15 239 1175764 7158.3 814 797 164.1
A 12 96 8785 48.67 814 797 164.1
A 0 226 7133 38.6 814 797 164.1
B 4 173 62812 382.13 860 840 162.2
B 12 111 18414 108.36 860 840 162.2
B 11 111 15699 91.62 860 840 162.2
C 14 238 126046 652.32 825 833 192.0
C 10 22 30224 153.12 825 833 192.0
C 0 207 18649 92.82 825 833 192.0
D 13 172 36160 175.72 827 805 201.2
D 1 52 29983 145.02 827 805 201.2
D 2 234 24793 119.22 827 805 201.2

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