ASTROSAT CZTI

Data Quality Report

Orbit 45854

Creation date: 2024-06-27T23:16:56.639045
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/AS1T05_187T01_9000006132_45854cztM0_level2.fits modeM0/AS1T05_187T01_9000006132_45854cztM0_level2_quad_clean.evt
Size (bytes)687,237,120102,513,600
Size655.4 MB 97.8 MB
Events in quadrant A5,833,646720,921
Events in quadrant B10,931,180536,705
Events in quadrant C3,093,972736,288
Events in quadrant D5,048,944631,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213751
B0372921
C0142471
D0195611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68642723.962704%
B6865263138.324836%
C68651031.500364%
D68654857.064822%

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 7404 6865 1 1 0.01% 0.01%
B 7405 6865 1672 1672 22.58% 24.36%
C 7405 6866 2 2 0.03% 0.03%
D 7405 6866 281 281 3.79% 4.09%

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 2821271 17451.82 772 753 161.6
A 7 191 14214 83.29 772 753 161.6
A 13 254 10463 60.08 772 753 161.6
B 3 112 7328854 54294.56 688 665 135.0
B 0 171 424750 3142.05 688 665 135.0
B 2 2 85104 625.61 688 665 135.0
C 14 254 62199 341.42 770 772 179.9
C 12 249 21629 115.93 770 772 179.9
C 3 233 6113 29.69 770 772 179.9
D 13 249 509087 2674.12 751 728 190.1
D 1 52 457466 2402.58 751 728 190.1
D 12 2 367391 1928.76 751 728 190.1

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