ASTROSAT CZTI

Data Quality Report

Orbit 36912

Creation date: 2024-06-27T21:33:09.107934
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_010T01_9000005246_36912cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36912cztM0_level2_quad_clean.evt
Size (bytes)315,077,76071,156,160
Size300.5 MB 67.9 MB
Events in quadrant A2,617,648606,303
Events in quadrant B752,1548,364
Events in quadrant C2,818,456610,563
Events in quadrant D3,008,594577,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108453
B050392
C0112272
D0122192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499790.180108%
B49974997100.000000%
C4997490.980588%
D49971563.121873%

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 7060 4998 5 5 0.07% 0.10%
B 7059 4996 0 0 0.00% 0.00%
C 7060 4998 32 32 0.45% 0.64%
D 7060 4998 126 126 1.78% 2.52%

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 214962 1774.05 607 595 120.8
A 9 143 31642 256.94 607 595 120.8
A 13 6 13168 104.05 607 595 120.8
B 12 243 694850 192701.47 9 9 3.6
B 12 144 12878 3568.98 9 9 3.6
B 0 229 2574 711.36 9 9 3.6
C 15 214 215271 1534.49 605 611 139.9
C 0 10 184337 1313.36 605 611 139.9
C 15 208 38904 273.74 605 611 139.9
D 13 249 399471 2766.59 593 580 144.2
D 13 171 188211 1301.35 593 580 144.2
D 12 233 37452 255.73 593 580 144.2

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