ASTROSAT CZTI

Data Quality Report

Orbit 36082

Creation date: 2022-08-10T06:53:04.318065
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_36082cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36082cztM0_level2_quad_clean.evt
Size (bytes)411,560,64065,505,600
Size392.5 MB 62.5 MB
Events in quadrant A2,623,551415,037
Events in quadrant B2,888,593409,363
Events in quadrant C3,049,635391,228
Events in quadrant D3,528,918383,360

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 7105 5494 0 0 0.00% 0.00%
B 7105 5494 28 28 0.39% 0.51%
C 7105 5494 96 96 1.35% 1.75%
D 7105 5494 100 100 1.41% 1.82%

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 183462 1445.84 626 613 126.5
A 13 6 12182 91.48 626 613 126.5
A 13 254 6587 47.24 626 613 126.5
B 5 172 173134 1422.38 622 607 121.3
B 4 232 71203 582.02 622 607 121.3
B 0 190 61415 501.32 622 607 121.3
C 0 10 328104 2321.72 596 598 141.1
C 15 214 227219 1606.54 596 598 141.1
C 15 208 157968 1115.61 596 598 141.1
D 1 52 543090 3688.64 597 582 147.1
D 13 249 172859 1171.35 597 582 147.1
D 12 6 143954 974.82 597 582 147.1

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