ASTROSAT CZTI

Data Quality Report

Orbit 06482

Creation date: 2024-06-27T15:07:48.427219
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_046T01_9000000864_06482cztM0_level2.evt modeM0/AS1A02_046T01_9000000864_06482cztM0_level2_quad_clean.evt
Size (bytes)435,790,080127,753,920
Size415.6 MB 121.8 MB
Events in quadrant A3,048,692864,753
Events in quadrant B3,252,747869,561
Events in quadrant C3,225,835851,709
Events in quadrant D3,219,874821,372

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137193
B0142512
C0144882
D0143452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6631230.346856%
B6631270.407178%
C6631580.874680%
D6631330.497662%

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 7846 6632 1 1 0.01% 0.02%
B 7846 6632 4 4 0.05% 0.06%
C 7846 6632 25 25 0.32% 0.38%
D 7846 6632 15 15 0.19% 0.23%

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 30692 190.96 771 755 156.8
A 15 236 25248 156.23 771 755 156.8
A 10 133 9932 58.53 771 755 156.8
B 0 219 70028 473.82 777 761 146.2
B 15 204 46735 314.49 777 761 146.2
B 0 245 34117 228.17 777 761 146.2
C 1 16 299275 1743.43 746 749 171.2
C 12 4 7252 37.98 746 749 171.2
C 9 54 7116 37.18 746 749 171.2
D 2 152 168061 923.6 742 718 181.2
D 8 195 110304 604.83 742 718 181.2
D 2 14 62113 338.85 742 718 181.2

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