ASTROSAT CZTI

Data Quality Report

Orbit 34817

Creation date: 2022-03-07T15:18:46.269447
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/AS1C07_005T01_9000004992_34817cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34817cztM0_level2_quad_clean.evt
Size (bytes)642,896,64097,752,960
Size613.1 MB 93.2 MB
Events in quadrant A2,660,546687,030
Events in quadrant B8,945,062540,372
Events in quadrant C3,153,777685,893
Events in quadrant D4,327,098649,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116493
B0305212
C0126742
D0167392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5671300.529007%
B5671229940.539587%
C56711011.780991%
D56711192.098395%

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 7163 5672 18 18 0.25% 0.32%
B 7163 5672 1945 1945 27.15% 34.29%
C 7163 5672 73 73 1.02% 1.29%
D 7163 5672 121 121 1.69% 2.13%

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 15 174 60505 457.73 652 639 130.8
A 10 83 52911 399.67 652 639 130.8
A 13 6 11237 81.03 652 639 130.8
B 4 251 6325748 61458.86 539 524 102.9
B 5 255 168813 1635.18 539 524 102.9
B 5 172 138640 1342.0 539 524 102.9
C 15 214 261074 1787.27 631 634 145.7
C 0 10 186141 1273.04 631 634 145.7
C 0 207 143339 979.31 631 634 145.7
D 8 195 677785 4057.11 627 614 166.9
D 14 52 518663 3103.76 627 614 166.9
D 13 249 101223 602.77 627 614 166.9

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