ASTROSAT CZTI

Data Quality Report

Orbit 20220405_A11_047T09_9000005054_level2

Creation date: 2022-04-09T12:36:44.596457
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_047T09_9000005054cztM0_level2_bc.evt modeM0/AS1A11_047T09_9000005054cztM0_level2_quad_clean.evt
Size (bytes)5,641,508,1601,012,959,360
Size5.3 GB 966.0 MB
Events in quadrant A19,872,3676,927,518
Events in quadrant B63,162,4225,590,952
Events in quadrant C26,283,0296,751,706
Events in quadrant D56,114,2955,925,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01713410
B03869290
C01899130
D03065200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016300
B016300
C016300
D016300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A798147330.918385%
B798142671733.474077%
C7981421382.678728%
D798141234115.462200%

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 111460 79831 359 359 0.32% 0.45%
B 111460 79780 860 860 0.77% 1.08%
C 111460 79812 447 447 0.40% 0.56%
D 111460 79793 3480 3480 3.12% 4.36%

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 7 3 1822954 1960.19 4255 4199 927.8
A 10 83 1067007 1145.46 4255 4199 927.8
A 13 6 187982 198.07 4255 4199 927.8
B 5 236 40617473 57022.26 3631 3564 712.2
B 5 172 6666987 9355.5 3631 3564 712.2
B 4 232 682313 952.97 3631 3564 712.2
C 0 10 5404088 5819.47 4094 4064 927.9
C 15 214 3140008 3379.53 4094 4064 927.9
C 15 208 987555 1059.88 4094 4064 927.9
D 7 80 16395219 17424.63 3918 3799 940.7
D 8 195 10408366 11060.4 3918 3799 940.7
D 12 227 2891460 3069.68 3918 3799 940.7

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