ASTROSAT CZTI

Data Quality Report

Orbit 36149

Creation date: 2022-08-10T21:17:07.050722
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_36149cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36149cztM0_level2_quad_clean.evt
Size (bytes)474,840,00066,553,920
Size452.8 MB 63.5 MB
Events in quadrant A2,671,267421,120
Events in quadrant B2,998,715423,265
Events in quadrant C2,838,648412,725
Events in quadrant D5,497,188371,395

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 7018 5526 0 0 0.00% 0.00%
B 7018 5526 45 45 0.64% 0.81%
C 7018 5526 12 12 0.17% 0.22%
D 7018 5526 382 382 5.44% 6.91%

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 177140 1367.74 637 624 129.1
A 9 143 11091 81.1 637 624 129.1
A 13 6 9182 66.31 637 624 129.1
B 5 172 396025 3200.4 630 613 123.6
B 4 171 61058 489.23 630 613 123.6
B 0 213 26192 207.03 630 613 123.6
C 15 214 238587 1629.26 614 618 146.1
C 0 10 109507 745.51 614 618 146.1
C 1 208 80291 545.48 614 618 146.1
D 1 52 2042242 13803.83 597 580 147.9
D 13 249 739110 4993.26 597 580 147.9
D 10 253 84020 564.14 597 580 147.9

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