ASTROSAT CZTI

Data Quality Report

Orbit 46350

Creation date: 2024-06-27T23:22:05.755801
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_070T05_9000006198_46350cztM0_level2.fits modeM0/AS1A13_070T05_9000006198_46350cztM0_level2_quad_clean.evt
Size (bytes)661,645,440129,548,160
Size631.0 MB 123.5 MB
Events in quadrant A8,101,521849,531
Events in quadrant B4,498,075895,890
Events in quadrant C3,900,572871,758
Events in quadrant D7,350,570729,315

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296981
B0191970
C0177530
D0275710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82823404.105289%
B82821992.402801%
C8283590.712302%
D828389510.805264%

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 8282 8282 36 36 0.43% 0.43%
B 8282 8282 66 66 0.80% 0.80%
C 8283 8283 25 25 0.30% 0.30%
D 8283 8283 616 616 7.44% 7.44%

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 10 83 3900283 20122.86 929 908 193.8
A 15 223 252602 1298.88 929 908 193.8
A 14 235 151879 779.09 929 908 193.8
B 5 172 274851 1491.63 936 905 183.7
B 0 190 110136 594.76 936 905 183.7
B 15 201 99170 535.05 936 905 183.7
C 12 2 162119 739.88 927 931 217.9
C 9 54 50050 225.47 927 931 217.9
C 2 14 27571 122.28 927 931 217.9
D 12 1 1198192 5284.5 888 858 226.6
D 1 52 916394 4040.77 888 858 226.6
D 2 37 518493 2284.61 888 858 226.6

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