ASTROSAT CZTI

Data Quality Report

Orbit 11819

Creation date: 2024-06-27T16:18:42.430738
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/AS1A04_022T07_9000001748_11819cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11819cztM0_level2_quad_clean.evt
Size (bytes)292,383,36042,036,480
Size278.8 MB 40.1 MB
Events in quadrant A1,982,773251,159
Events in quadrant B2,648,723244,286
Events in quadrant C1,822,446254,393
Events in quadrant D2,129,310241,879

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084672
B0104531
C081151
D090981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3968541.360887%
B39682065.191532%
C3968330.831653%
D3968781.965726%

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 4754 3970 0 0 0.00% 0.00%
B 4754 3970 81 81 1.70% 2.04%
C 4754 3970 0 0 0.00% 0.00%
D 4754 3970 28 28 0.59% 0.71%

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 1 162 62368 633.46 474 463 97.7
A 1 178 31906 321.75 474 463 97.7
A 1 161 28244 284.28 474 463 97.7
B 10 16 337910 3689.5 470 458 91.5
B 4 239 250767 2736.73 470 458 91.5
B 3 64 139661 1521.96 470 458 91.5
C 8 208 5023 41.1 465 467 110.9
C 13 61 3381 26.29 465 467 110.9
C 12 4 2149 15.17 465 467 110.9
D 1 52 128495 1139.41 461 447 112.4
D 9 85 78159 691.51 461 447 112.4
D 13 104 37424 329.03 461 447 112.4

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