ASTROSAT CZTI

Data Quality Report

Orbit 27369

Creation date: 2024-06-27T19:39:24.600235
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/AS1T03_249T01_9000003934_27369cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27369cztM0_level2_quad_clean.evt
Size (bytes)508,440,96090,774,720
Size484.9 MB 86.6 MB
Events in quadrant A3,095,775601,373
Events in quadrant B3,097,455609,836
Events in quadrant C5,378,793524,965
Events in quadrant D3,395,482569,911

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131700
B0131700
C0199220
D0142660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6353370.582402%
B6354460.723953%
C635484013.220019%
D6354651.022978%

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 7468 6354 3 3 0.04% 0.05%
B 7469 6354 0 0 0.00% 0.00%
C 7469 6355 677 677 9.06% 10.65%
D 7469 6355 47 47 0.63% 0.74%

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 12 96 44710 275.49 789 775 159.5
A 13 254 10379 60.22 789 775 159.5
A 12 189 8824 50.47 789 775 159.5
B 12 111 17699 114.51 784 766 147.9
B 11 111 15975 102.85 784 766 147.9
B 14 111 14613 93.64 784 766 147.9
C 2 16 2505701 15173.81 708 712 165.1
C 14 238 113781 684.91 708 712 165.1
C 13 61 4892 25.32 708 712 165.1
D 1 52 423423 2389.37 751 735 176.9
D 2 250 44563 247.75 751 735 176.9
D 6 112 36745 203.56 751 735 176.9

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