ASTROSAT CZTI

Data Quality Report

Orbit 46908

Creation date: 2024-06-27T23:29:17.245536
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_053T01_9000006282_46908cztM0_level2.fits modeM0/AS1A13_053T01_9000006282_46908cztM0_level2_quad_clean.evt
Size (bytes)801,475,20088,620,480
Size764.3 MB 84.5 MB
Events in quadrant A5,977,737703,767
Events in quadrant B11,674,950355,653
Events in quadrant C2,856,935696,729
Events in quadrant D8,673,238488,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215491
B0390383
C0130581
D0300291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62732113.363622%
B6272370058.992347%
C6273400.637653%
D6273187529.890005%

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 7398 6273 45 45 0.61% 0.72%
B 7397 6272 2924 2924 39.53% 46.62%
C 7398 6274 16 16 0.22% 0.26%
D 7398 6273 1761 1761 23.80% 28.07%

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 3142291 21177.92 714 699 148.3
A 13 248 44913 298.05 714 699 148.3
A 15 254 16517 106.63 714 699 148.3
B 3 112 9119301 79156.18 585 567 115.2
B 15 36 121661 1051.17 585 567 115.2
B 0 200 59112 508.21 585 567 115.2
C 12 249 52120 317.32 694 697 162.1
C 14 254 51600 314.12 694 697 162.1
C 0 207 15921 93.95 694 697 162.1
D 12 0 4836541 31372.91 614 593 154.1
D 13 249 686707 4451.12 614 593 154.1
D 10 181 406106 2630.74 614 593 154.1

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