ASTROSAT CZTI

Data Quality Report

Orbit 20211202_A11_046T04_9000004792_level2

Creation date: 2021-12-04T18:02:20.619253
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_046T04_9000004792cztM0_level2_bc.evt modeM0/AS1A11_046T04_9000004792cztM0_level2_quad_clean.evt
Size (bytes)4,236,465,6001,282,000,320
Size3.9 GB 1.2 GB
Events in quadrant A19,590,7098,732,633
Events in quadrant B28,631,9718,513,482
Events in quadrant C20,849,6868,579,133
Events in quadrant D54,179,3577,902,872

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01549670
B02059040
C01615280
D02762290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02950
B02950
C02950
D02950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015220
C015220
D015220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74438790.106129%
B7443849746.682071%
C744385900.792606%
D7443858037.795749%

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 103923 74441 0 0 0.00% 0.00%
B 103923 74435 195 195 0.19% 0.26%
C 103923 74438 126 126 0.12% 0.17%
D 103923 74438 2174 2174 2.09% 2.92%

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 47 4483799 5258.87 3859 3808 851.9
A 13 254 129355 147.37 3859 3808 851.9
A 13 6 125535 142.89 3859 3808 851.9
B 5 172 8838654 11778.68 3762 3684 750.1
B 5 255 2657426 3537.94 3762 3684 750.1
B 0 213 766017 1016.33 3762 3684 750.1
C 15 214 3050831 3612.07 3723 3697 843.6
C 1 23 966145 1140.89 3723 3697 843.6
C 0 10 824801 973.34 3723 3697 843.6
D 8 195 22121765 24831.3 3658 3548 890.7
D 1 52 8236366 9242.68 3658 3548 890.7
D 2 250 2624469 2942.41 3658 3548 890.7

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