ASTROSAT CZTI

Data Quality Report

Orbit 12825

Creation date: 2024-06-27T16:32:48.223234
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_12825cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12825cztM0_level2_quad_clean.evt
Size (bytes)501,802,56082,768,320
Size478.6 MB 78.9 MB
Events in quadrant A3,355,576524,708
Events in quadrant B4,817,829502,228
Events in quadrant C3,192,951526,230
Events in quadrant D3,397,083507,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139653
B0186072
C0134412
D0142552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63861081.691199%
B638668110.663952%
C6386951.487629%
D63861181.847792%

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 7612 6388 0 0 0.00% 0.00%
B 7612 6388 382 382 5.02% 5.98%
C 7612 6388 0 0 0.00% 0.00%
D 7612 6388 18 18 0.24% 0.28%

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 74870 439.65 837 821 168.4
A 15 222 57694 337.67 837 821 168.4
A 0 226 7511 39.72 837 821 168.4
B 4 239 1446081 9775.24 788 770 147.9
B 0 219 158306 1065.48 788 770 147.9
B 0 197 50659 337.42 788 770 147.9
C 13 61 6093 28.11 818 823 187.5
C 14 234 4699 20.67 818 823 187.5
C 3 233 1889 5.69 818 823 187.5
D 1 52 131501 661.35 815 793 197.6
D 13 172 64417 321.92 815 793 197.6
D 13 104 58154 290.23 815 793 197.6

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