ASTROSAT CZTI

Data Quality Report

Orbit 34135

Creation date: 2024-06-27T20:56:52.812682
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/AS1A11_097T08_9000004874_34135cztM0_level2.evt modeM0/AS1A11_097T08_9000004874_34135cztM0_level2_quad_clean.evt
Size (bytes)488,088,00055,762,560
Size465.5 MB 53.2 MB
Events in quadrant A2,287,689344,575
Events in quadrant B5,644,571342,368
Events in quadrant C3,064,243338,738
Events in quadrant D3,457,051323,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A097322
B0199651
C0119801
D0134811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A483630.062035%
B4836133427.584781%
C48361052.171216%
D48361533.163772%

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 6839 4837 0 0 0.00% 0.00%
B 6839 4837 1132 1132 16.55% 23.40%
C 6839 4837 89 89 1.30% 1.84%
D 6839 4837 139 139 2.03% 2.87%

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 12010 96.66 587 574 118.3
A 13 254 8794 69.48 587 574 118.3
A 13 6 7116 55.29 587 574 118.3
B 5 31 1982373 19445.12 530 517 101.9
B 5 15 1103517 10822.16 530 517 101.9
B 5 14 283544 2776.94 530 517 101.9
C 0 10 636020 4875.11 561 568 130.3
C 15 214 206931 1583.19 561 568 130.3
C 14 67 10137 73.41 561 568 130.3
D 8 195 584074 4150.15 564 548 140.6
D 7 80 405979 2883.5 564 548 140.6
D 2 250 143126 1014.04 564 548 140.6

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