ASTROSAT CZTI

Data Quality Report

Orbit 04387

Creation date: 2024-06-27T14:41:19.477340
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/AS1G05_230T02_9000000548_04387cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04387cztM0_level2_quad_clean.evt
Size (bytes)405,783,36066,029,760
Size387.0 MB 63.0 MB
Events in quadrant A2,736,674404,910
Events in quadrant B2,933,524400,332
Events in quadrant C2,676,680397,492
Events in quadrant D3,539,626382,902

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122292
B0127501
C0122781
D0146101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59191161.959791%
B59191101.858422%
C59191031.740159%
D59191732.922791%

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 7019 5920 6 6 0.09% 0.10%
B 7019 5920 13 13 0.19% 0.22%
C 7019 5920 21 21 0.30% 0.35%
D 7019 5920 67 67 0.95% 1.13%

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 15 234 38709 275.95 682 667 137.9
A 13 251 18877 132.09 682 667 137.9
A 8 15 12370 84.89 682 667 137.9
B 14 167 205763 1587.91 682 667 129.2
B 4 48 34323 260.57 682 667 129.2
B 15 54 12800 93.94 682 667 129.2
C 9 247 78144 509.11 657 658 152.2
C 14 48 22164 141.3 657 658 152.2
C 9 16 8079 48.76 657 658 152.2
D 2 63 362759 2318.95 657 638 156.2
D 12 233 185562 1184.22 657 638 156.2
D 13 223 135022 860.57 657 638 156.2

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