ASTROSAT CZTI

Data Quality Report

Orbit 26445

Creation date: 2024-06-27T19:29:06.412229
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/AS1A09_056T01_9000003824_26445cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26445cztM0_level2_quad_clean.evt
Size (bytes)507,824,640107,815,680
Size484.3 MB 102.8 MB
Events in quadrant A3,330,451724,275
Events in quadrant B3,259,651743,936
Events in quadrant C3,671,715708,921
Events in quadrant D4,706,051664,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137750
B0134920
C0149640
D0181060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6068560.922874%
B6068560.922874%
C60682033.345419%
D60684727.778510%

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 7448 6069 16 16 0.21% 0.26%
B 7448 6069 0 0 0.00% 0.00%
C 7448 6069 41 41 0.55% 0.68%
D 7448 6069 356 356 4.78% 5.87%

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 0 13 148097 913.09 823 810 161.3
A 13 254 8221 45.94 823 810 161.3
A 0 226 7130 39.18 823 810 161.3
B 0 190 17742 113.59 823 804 149.1
B 12 111 17086 109.2 823 804 149.1
B 11 111 14917 94.65 823 804 149.1
C 4 254 194355 1040.41 806 813 186.0
C 14 238 130032 694.63 806 813 186.0
C 2 16 129656 692.61 806 813 186.0
D 7 80 893590 4819.59 790 777 185.2
D 1 52 524250 2825.82 790 777 185.2
D 12 233 185516 997.26 790 777 185.2

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