ASTROSAT CZTI

Data Quality Report

Orbit 06421

Creation date: 2024-06-27T15:07:00.663196
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/AS1A02_191T02_9000000852_06421cztM0_level2.evt modeM0/AS1A02_191T02_9000000852_06421cztM0_level2_quad_clean.evt
Size (bytes)452,387,52088,358,400
Size431.4 MB 84.3 MB
Events in quadrant A3,150,297549,788
Events in quadrant B3,168,620569,694
Events in quadrant C3,032,773553,267
Events in quadrant D3,886,175528,857

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140393
B0140012
C0138962
D0165712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6805410.602498%
B6805500.734754%
C6805330.484938%
D68051161.704629%

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 8635 6807 1 1 0.01% 0.01%
B 8635 6807 0 0 0.00% 0.00%
C 8635 6807 5 5 0.06% 0.07%
D 8635 6807 45 45 0.52% 0.66%

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 8 15 64608 395.96 786 766 161.2
A 15 236 28819 173.99 786 766 161.2
A 13 251 22433 134.38 786 766 161.2
B 4 81 37239 237.62 796 776 153.5
B 8 3 22672 142.69 796 776 153.5
B 12 111 16082 99.74 796 776 153.5
C 9 54 36988 203.46 767 769 178.0
C 13 61 6122 30.07 767 769 178.0
C 8 222 2513 9.8 767 769 178.0
D 11 241 481434 2567.3 760 732 187.2
D 2 152 236609 1259.76 760 732 187.2
D 13 169 169536 901.54 760 732 187.2

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