ASTROSAT CZTI

Data Quality Report

Orbit 04362

Creation date: 2024-06-27T14:40:56.087136
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_167T01_9000000542_04362cztM0_level2.evt modeM0/AS1G05_167T01_9000000542_04362cztM0_level2_quad_clean.evt
Size (bytes)524,113,92096,128,640
Size499.8 MB 91.7 MB
Events in quadrant A3,600,578615,744
Events in quadrant B3,504,401612,445
Events in quadrant C4,640,911590,735
Events in quadrant D3,630,660583,303

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01567622
B01531917
C01866654
D01617727

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01502
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7308570.779967%
B7310590.807114%
C73042072.834064%
D73051021.396304%

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 7613 7319 7 7 0.09% 0.10%
B 7613 7318 1 1 0.01% 0.01%
C 7613 7316 175 175 2.30% 2.39%
D 7613 7319 33 33 0.43% 0.45%

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 13 251 168829 941.24 862 844 178.5
A 0 50 60954 336.8 862 844 178.5
A 8 15 18864 100.97 862 844 178.5
B 15 204 76401 445.47 870 847 169.6
B 8 3 34265 197.03 870 847 169.6
B 14 167 28385 162.37 870 847 169.6
C 9 247 890579 4566.29 834 841 194.8
C 9 16 414155 2121.2 834 841 194.8
C 10 65 48358 243.87 834 841 194.8
D 2 136 134598 660.47 835 814 202.6
D 13 223 79916 390.51 835 814 202.6
D 13 239 70659 344.81 835 814 202.6

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