ASTROSAT CZTI

Data Quality Report

Orbit 47987

Creation date: 2024-08-12T13:47:37.552995
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_062T02_9000006384_47987cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47987cztM0_level2_quad_clean.evt
Size (bytes)488,445,120133,778,880
Size465.8 MB 127.6 MB
Events in quadrant A7,134,043938,860
Events in quadrant B3,419,393922,832
Events in quadrant C3,250,576876,060
Events in quadrant D3,721,513814,918

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260943
B0153570
C0150480
D0164290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7157761.061897%
B7158260.363230%
C7158100.139704%
D7158991.383068%

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 7157 7157 2 2 0.03% 0.03%
B 7158 7158 16 16 0.22% 0.22%
C 7158 7158 6 6 0.08% 0.08%
D 7158 7158 105 105 1.47% 1.47%

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 3855451 22023.27 832 818 175.0
A 14 248 66094 372.95 832 818 175.0
A 13 254 9453 49.34 832 818 175.0
B 5 255 58735 354.19 817 793 163.6
B 4 171 45073 270.68 817 793 163.6
B 7 221 33614 200.63 817 793 163.6
C 14 254 70032 356.46 806 812 194.2
C 14 67 17231 84.55 806 812 194.2
C 12 250 7710 35.52 806 812 194.2
D 2 249 244216 1181.77 810 786 206.0
D 13 29 188110 909.39 810 786 206.0
D 11 224 73516 353.08 810 786 206.0

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