ASTROSAT CZTI

Data Quality Report

Orbit 28822

Creation date: 2024-06-27T19:56:49.345368
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/AS1A10_121T01_9000004134_28822cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28822cztM0_level2_quad_clean.evt
Size (bytes)575,138,88098,320,320
Size548.5 MB 93.8 MB
Events in quadrant A2,908,344661,852
Events in quadrant B2,967,234677,158
Events in quadrant C3,873,054640,164
Events in quadrant D7,263,260578,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123531
B0125031
C0154871
D0258101

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6002751.249583%
B6003781.299350%
C60032594.314509%
D600397716.275196%

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 6907 6002 0 0 0.00% 0.00%
B 6908 6003 5 5 0.07% 0.08%
C 6908 6003 0 0 0.00% 0.00%
D 6908 6003 942 942 13.64% 15.69%

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 14 239 18217 117.35 743 729 149.0
A 14 235 17447 112.18 743 729 149.0
A 13 254 11538 72.53 743 729 149.0
B 0 156 26750 190.91 737 719 136.4
B 15 219 17739 124.82 737 719 136.4
B 12 111 16171 113.32 737 719 136.4
C 3 233 830313 5037.29 714 718 164.7
C 14 238 154523 933.9 714 718 164.7
C 14 254 60576 363.46 714 718 164.7
D 8 195 2259625 13543.85 694 675 166.8
D 1 52 2049295 12282.79 694 675 166.8
D 7 80 113545 676.73 694 675 166.8

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