ASTROSAT CZTI

Data Quality Report

Orbit 36147

Creation date: 2022-08-10T20:51:00.763007
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/AS1T04_069T01_9000005158_36147cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36147cztM0_level2_quad_clean.evt
Size (bytes)392,627,52046,215,360
Size374.4 MB 44.1 MB
Events in quadrant A2,611,113264,047
Events in quadrant B3,021,994264,267
Events in quadrant C2,883,850259,905
Events in quadrant D3,018,345244,645

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 7281 5219 4 4 0.05% 0.08%
B 7281 5219 79 79 1.09% 1.51%
C 7281 5219 72 72 0.99% 1.38%
D 7281 5219 83 83 1.14% 1.59%

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 170466 1344.71 620 607 126.3
A 8 144 17589 134.44 620 607 126.3
A 9 143 15043 114.28 620 607 126.3
B 5 172 481057 4109.63 612 596 116.9
B 0 190 84284 715.83 612 596 116.9
B 0 213 18436 152.59 612 596 116.9
C 0 10 276578 1955.34 601 604 141.1
C 15 214 223196 1577.12 601 604 141.1
C 0 207 19121 131.2 601 604 141.1
D 13 249 269750 1852.32 593 574 145.3
D 1 52 219253 1504.83 593 574 145.3
D 12 6 94770 648.2 593 574 145.3

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