ASTROSAT CZTI

Data Quality Report

Orbit 04910

Creation date: 2024-06-27T14:48:45.351558
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_118T01_9000000622_04910cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04910cztM0_level2_quad_clean.evt
Size (bytes)540,074,88082,422,720
Size515.1 MB 78.6 MB
Events in quadrant A3,541,922505,406
Events in quadrant B3,604,128510,166
Events in quadrant C3,075,264509,237
Events in quadrant D5,653,588476,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155752
B0156491
C0144801
D0217421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70902173.060649%
B70901822.566996%
C7090550.775740%
D70905778.138223%

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 7395 7090 88 88 1.19% 1.24%
B 7395 7091 27 27 0.37% 0.38%
C 7395 7091 0 0 0.00% 0.00%
D 7395 7090 434 434 5.87% 6.12%

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 0 31 412724 2522.99 800 783 163.3
A 0 50 24873 147.54 800 783 163.3
A 13 251 11420 65.15 800 783 163.3
B 10 246 140179 900.03 812 792 154.9
B 8 3 116120 744.68 812 792 154.9
B 0 219 73712 470.85 812 792 154.9
C 1 16 7755 38.62 782 782 180.6
C 13 61 6522 31.79 782 782 180.6
C 8 222 6039 29.12 782 782 180.6
D 2 63 1738520 9351.99 761 735 185.8
D 2 136 304686 1635.73 761 735 185.8
D 13 235 204324 1095.63 761 735 185.8

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