ASTROSAT CZTI

Data Quality Report

Orbit 04180

Creation date: 2024-06-27T14:38:26.830636
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_240T01_9000000536_04180cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04180cztM0_level2_quad_clean.evt
Size (bytes)502,920,00072,106,560
Size479.6 MB 68.8 MB
Events in quadrant A3,525,990444,001
Events in quadrant B4,764,734444,330
Events in quadrant C2,894,060437,537
Events in quadrant D3,613,783412,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145462
B0187691
C0129781
D0150091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6373701.098384%
B63731632.557665%
C6373140.219677%
D63732503.922799%

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 7503 6374 6 6 0.08% 0.09%
B 7503 6374 97 97 1.29% 1.52%
C 7503 6374 1 1 0.01% 0.02%
D 7503 6374 145 145 1.93% 2.27%

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 3 1 377018 2391.96 769 752 157.3
A 0 50 63481 398.77 769 752 157.3
A 15 234 59283 372.09 769 752 157.3
B 3 0 1334023 9110.47 765 748 146.3
B 8 3 296866 2023.42 765 748 146.3
B 10 16 84007 568.92 765 748 146.3
C 9 144 9989 54.05 735 739 171.1
C 13 61 6025 30.89 735 739 171.1
C 7 247 5678 28.86 735 739 171.1
D 4 95 398319 2260.21 727 708 175.9
D 13 239 240105 1360.85 727 708 175.9
D 2 232 168594 954.34 727 708 175.9

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