ASTROSAT CZTI

Data Quality Report

Orbit 21680

Creation date: 2024-06-27T18:31:01.316385
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_143T01_9000003208_21680cztM0_level2.evt modeM0/AS1T03_143T01_9000003208_21680cztM0_level2_quad_clean.evt
Size (bytes)459,411,84091,627,200
Size438.1 MB 87.4 MB
Events in quadrant A3,100,910595,896
Events in quadrant B3,403,499611,555
Events in quadrant C3,121,332580,083
Events in quadrant D3,855,500543,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131822
B0140632
C0131502
D0157932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6364250.392835%
B6364691.084224%
C6364470.738529%
D63641552.435575%

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 7494 6365 0 0 0.00% 0.00%
B 7494 6365 19 19 0.25% 0.30%
C 7494 6365 1 1 0.01% 0.02%
D 7494 6365 135 135 1.80% 2.12%

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 15 236 13664 80.12 801 786 160.7
A 13 254 9670 55.27 801 786 160.7
A 0 226 6908 38.09 801 786 160.7
B 3 64 91129 592.52 806 788 152.5
B 0 229 43120 277.64 806 788 152.5
B 0 230 40178 258.35 806 788 152.5
C 14 238 121266 666.63 767 773 180.7
C 10 22 6044 29.16 767 773 180.7
C 13 61 5340 25.27 767 773 180.7
D 7 238 605592 3268.82 757 735 185.0
D 1 20 166333 894.94 757 735 185.0
D 2 136 55045 293.51 757 735 185.0

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