ASTROSAT CZTI

Data Quality Report

Orbit 23447

Creation date: 2024-06-27T18:54:28.354919
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/AS1A07_100T02_9000003470_23447cztM0_level2.evt modeM0/AS1A07_100T02_9000003470_23447cztM0_level2_quad_clean.evt
Size (bytes)614,750,400101,390,400
Size586.3 MB 96.7 MB
Events in quadrant A3,006,285691,158
Events in quadrant B3,199,892710,953
Events in quadrant C3,182,587687,865
Events in quadrant D8,825,632563,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012870311
B013498328
C013426384
D031293889

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01244
B01242
C01242
D01244

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5964120.201207%
B5974350.585872%
C5964560.938967%
D5939172329.011618%

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 7371 5993 0 0 0.00% 0.00%
B 7352 5998 13 13 0.18% 0.22%
C 7317 5982 0 0 0.00% 0.00%
D 7241 5947 1637 1637 22.61% 27.53%

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 10081 60.26 779 765 154.6
A 0 226 6614 37.83 779 765 154.6
A 3 137 5995 33.83 779 765 154.6
B 5 172 44834 305.43 780 765 144.3
B 0 190 32989 223.33 780 765 144.3
B 0 229 24357 163.51 780 765 144.3
C 14 238 122231 680.02 771 777 178.6
C 1 16 41159 226.1 771 777 178.6
C 7 247 13145 69.25 771 777 178.6
D 7 238 3848152 23336.89 689 669 164.9
D 1 52 2138497 12966.98 689 669 164.9
D 5 172 142961 863.07 689 669 164.9

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