ASTROSAT CZTI

Data Quality Report

Orbit 12851

Creation date: 2024-06-27T16:33:07.612663
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_071T01_9000001888_12851cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12851cztM0_level2_quad_clean.evt
Size (bytes)468,086,40079,813,440
Size446.4 MB 76.1 MB
Events in quadrant A3,311,536501,747
Events in quadrant B4,025,894498,236
Events in quadrant C3,084,306498,144
Events in quadrant D3,323,592476,283

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136812
B0157931
C0131001
D0138231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6342620.977610%
B63423064.824976%
C6342420.662252%
D6342741.166824%

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 7588 6344 0 0 0.00% 0.00%
B 7588 6344 174 174 2.29% 2.74%
C 7588 6344 5 5 0.07% 0.08%
D 7588 6344 29 29 0.38% 0.46%

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 12 189 115263 692.4 827 810 165.3
A 15 222 18877 109.3 827 810 165.3
A 0 226 7637 41.3 827 810 165.3
B 4 239 641791 4260.9 802 785 150.4
B 4 173 61887 406.16 802 785 150.4
B 0 219 41450 270.31 802 785 150.4
C 14 234 21528 115.68 786 789 179.3
C 13 61 5652 27.13 786 789 179.3
C 3 202 1992 6.71 786 789 179.3
D 1 52 178595 952.5 788 767 186.7
D 4 95 88037 467.44 788 767 186.7
D 2 234 25663 133.35 788 767 186.7

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