ASTROSAT CZTI

Data Quality Report

Orbit 11127

Creation date: 2024-06-27T16:08:38.216285
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_071T02_9000001620_11127cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11127cztM0_level2_quad_clean.evt
Size (bytes)606,968,64086,261,760
Size578.9 MB 82.3 MB
Events in quadrant A4,547,621538,374
Events in quadrant B4,638,037550,130
Events in quadrant C2,999,051557,268
Events in quadrant D5,749,178504,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181013
B0180802
C0134902
D0215772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66203124.712991%
B66204116.208459%
C6620360.543807%
D66206429.697885%

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 7655 6621 192 192 2.51% 2.90%
B 7655 6621 233 233 3.04% 3.52%
C 7655 6621 0 0 0.00% 0.00%
D 7655 6621 500 500 6.53% 7.55%

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 8 5 1498988 9451.87 773 757 158.5
A 8 15 51969 323.08 773 757 158.5
A 14 63 12990 77.17 773 757 158.5
B 4 239 732716 4900.24 777 758 149.4
B 10 16 703950 4707.66 777 758 149.4
B 0 219 69930 463.09 777 758 149.4
C 13 61 5787 28.14 767 772 178.2
C 8 222 3805 17.02 767 772 178.2
C 14 234 3126 13.21 767 772 178.2
D 1 52 1339348 7544.82 728 706 177.4
D 10 253 957683 5393.69 728 706 177.4
D 11 129 300360 1688.9 728 706 177.4

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