ASTROSAT CZTI

Data Quality Report

Orbit 33747

Creation date: 2024-06-27T20:52:12.417623
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_037T01_9000004818_33747cztM0_level2.evt modeM0/AS1A11_037T01_9000004818_33747cztM0_level2_quad_clean.evt
Size (bytes)589,057,92096,497,280
Size561.8 MB 92.0 MB
Events in quadrant A4,207,785628,598
Events in quadrant B4,638,105632,998
Events in quadrant C3,452,396635,105
Events in quadrant D5,125,379595,840

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168053
B0178352
C0135612
D0192832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61502063.349593%
B61503696.000000%
C6150701.138211%
D61502163.512195%

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 8897 6152 103 103 1.16% 1.67%
B 8897 6152 286 286 3.21% 4.65%
C 8897 6152 62 62 0.70% 1.01%
D 8897 6152 191 191 2.15% 3.10%

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 15 169 1135939 8057.98 701 687 140.9
A 14 4 185707 1313.27 701 687 140.9
A 15 237 126029 889.67 701 687 140.9
B 5 172 909483 6871.14 693 675 132.3
B 15 222 541901 4092.0 693 675 132.3
B 0 189 138763 1044.03 693 675 132.3
C 15 214 268718 1675.94 693 698 159.9
C 3 233 147669 919.01 693 698 159.9
C 9 187 145908 908.0 693 698 159.9
D 8 195 1499738 8118.94 679 665 184.6
D 1 47 240280 1297.75 679 665 184.6
D 2 250 177399 957.19 679 665 184.6

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