ASTROSAT CZTI

Data Quality Report

Orbit 20210715_A10_053T40_9000004542_level2

Creation date: 2021-07-17T10:04:45.929794
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/AS1A10_053T40_9000004542cztM0_level2_bc.evt modeM0/AS1A10_053T40_9000004542cztM0_level2_quad_clean.evt
Size (bytes)493,646,400150,969,600
Size470.8 MB 144.0 MB
Events in quadrant A2,370,928971,419
Events in quadrant B5,666,574956,828
Events in quadrant C2,703,715918,187
Events in quadrant D3,415,582926,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240180
B0354440
C0256620
D0269240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A115453042.633175%
B115454784.140320%
C115456345.491555%
D115452612.260719%

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 12055 11546 0 0 0.00% 0.00%
B 12055 11547 3 3 0.02% 0.03%
C 12055 11547 2 2 0.02% 0.02%
D 12055 11545 2 2 0.02% 0.02%

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 13 254 20913 149.08 612 600 136.3
A 0 226 3808 23.54 612 600 136.3
A 12 194 3651 22.39 612 600 136.3
B 6 159 3135354 26572.58 605 590 118.0
B 0 190 75812 637.64 605 590 118.0
B 5 172 30391 252.62 605 590 118.0
C 3 233 250345 1829.54 574 569 136.5
C 0 10 132095 963.39 574 569 136.5
C 14 254 40803 294.7 574 569 136.5
D 8 195 900442 6493.17 601 579 138.6
D 2 234 51570 367.94 601 579 138.6
D 12 79 43366 308.74 601 579 138.6

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