ASTROSAT CZTI

Data Quality Report

Orbit 05937

Creation date: 2024-06-27T15:01:02.352533
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/AS1G06_027T01_9000000770_05937cztM0_level2.evt modeM0/AS1G06_027T01_9000000770_05937cztM0_level2_quad_clean.evt
Size (bytes)490,331,52065,580,480
Size467.6 MB 62.5 MB
Events in quadrant A3,020,359406,025
Events in quadrant B3,201,066417,620
Events in quadrant C3,000,263418,673
Events in quadrant D5,196,773300,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147361449
B0150491526
C0146691373
D0254966065

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01468
B014614
C014612
D01468

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64001612.515625%
B64131872.915952%
C64421121.738590%
D595784614.201779%

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 7729 6925 0 0 0.00% 0.00%
B 7729 6944 0 0 0.00% 0.00%
C 7729 6950 0 0 0.00% 0.00%
D 7729 6573 552 552 7.14% 8.40%

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 7 16 27880 168.94 775 758 160.5
A 4 2 9515 54.55 775 758 160.5
A 12 194 7459 41.74 775 758 160.5
B 15 204 57306 369.04 785 766 153.2
B 4 80 23949 151.32 785 766 153.2
B 15 255 20646 129.76 785 766 153.2
C 9 68 24145 129.89 762 767 180.0
C 13 61 6160 29.97 762 767 180.0
C 1 16 2709 10.79 762 767 180.0
D 1 20 1588620 9460.79 674 654 167.8
D 1 239 731891 4356.57 674 654 167.8
D 8 195 156136 926.33 674 654 167.8

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