ASTROSAT CZTI

Data Quality Report

Orbit 12279

Creation date: 2024-06-27T16:24:54.088334
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/AS1G08_064T01_9000001814_12279cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12279cztM0_level2_quad_clean.evt
Size (bytes)638,544,96082,929,600
Size609.0 MB 79.1 MB
Events in quadrant A4,323,561505,389
Events in quadrant B6,834,940471,503
Events in quadrant C3,556,981508,014
Events in quadrant D4,101,536491,580

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179983
B0255272
C0159532
D0175642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76841912.485685%
B7684162721.173868%
C76841171.522644%
D76841812.355544%

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 8290 7687 1 1 0.01% 0.01%
B 8290 7687 769 769 9.28% 10.00%
C 8290 7687 2 2 0.02% 0.03%
D 8290 7687 42 42 0.51% 0.55%

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 11 29 130007 675.08 926 906 191.2
A 1 162 124231 644.87 926 906 191.2
A 8 15 99533 515.73 926 906 191.2
B 4 239 2983336 19106.78 811 789 156.1
B 0 85 280851 1794.13 811 789 156.1
B 11 51 169752 1082.41 811 789 156.1
C 1 16 28515 131.83 902 902 209.5
C 14 234 9303 40.11 902 902 209.5
C 13 61 6720 27.78 902 902 209.5
D 13 104 175502 799.1 900 872 218.5
D 1 52 171381 780.24 900 872 218.5
D 10 50 73732 333.41 900 872 218.5

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