ASTROSAT CZTI

Data Quality Report

Orbit 35952

Creation date: 2022-06-09T04:58:50.346237
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_080T01_9000005146_35952cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35952cztM0_level2_quad_clean.evt
Size (bytes)946,232,64071,553,600
Size902.4 MB 68.2 MB
Events in quadrant A5,767,859497,623
Events in quadrant B12,854,620306,786
Events in quadrant C5,731,088501,431
Events in quadrant D3,940,242481,971

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208163
B0417702
C0204752
D0155402

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5379148427.588771%
B5379520096.672244%
C5379168231.269753%
D53792624.870794%

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 7052 5380 993 993 14.08% 18.46%
B 7052 5380 4855 4855 68.85% 90.24%
C 7052 5380 887 887 12.58% 16.49%
D 7052 5380 208 208 2.95% 3.87%

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 15 169 3477599 30401.78 557 549 114.4
A 10 83 126264 1099.2 557 549 114.4
A 13 6 8514 69.64 557 549 114.4
B 5 14 3291165 46014.09 366 357 71.5
B 5 31 3241005 45312.72 366 357 71.5
B 5 15 3232576 45194.86 366 357 71.5
C 9 187 3657633 33278.7 466 469 109.9
C 15 214 178335 1618.51 466 469 109.9
C 0 10 34452 309.23 466 469 109.9
D 2 31 605527 4155.97 592 576 145.6
D 7 223 525232 3604.35 592 576 145.6
D 1 52 125639 859.17 592 576 145.6

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