ASTROSAT CZTI

Data Quality Report

Orbit 49813

Creation date: 2024-12-13T15:06:00.247792
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/AS1A13_037T01_9000006440_49813cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49813cztM0_level2_quad_clean.evt
Size (bytes)1,068,641,28062,040,960
Size1019.1 MB 59.2 MB
Events in quadrant A6,424,781566,994
Events in quadrant B4,281,885685,874
Events in quadrant C13,654,34415,451
Events in quadrant D14,671,155136,794

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236112
B0174282
C0452352
D0481792

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678096714.262537%
B67804136.091445%
C6780665798.185841%
D6780547080.678466%

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 7615 6780 776 776 10.19% 11.45%
B 7615 6780 216 216 2.84% 3.19%
C 7614 6779 4216 4216 55.37% 62.19%
D 7615 6780 4767 4767 62.60% 70.31%

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 0 98 1032521 5866.22 703 688 175.9
A 15 63 635062 3606.57 703 688 175.9
A 8 38 290959 1650.26 703 688 175.9
B 10 44 460883 2959.7 735 713 155.5
B 10 28 209345 1341.87 735 713 155.5
B 4 206 164684 1054.62 735 713 155.5
C 15 197 4570702 95593.5 141 139 47.8
C 1 23 2387879 49939.67 141 139 47.8
C 15 148 1812008 37895.31 141 139 47.8
D 7 61 3658969 30980.97 374 357 118.1
D 15 185 2594391 21966.17 374 357 118.1
D 15 142 2346588 19867.78 374 357 118.1

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