ASTROSAT CZTI

Data Quality Report

Orbit 13666

Creation date: 2024-06-27T16:44:14.948393
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/AS1G08_070T01_9000002028_13666cztM0_level2.evt modeM0/AS1G08_070T01_9000002028_13666cztM0_level2_quad_clean.evt
Size (bytes)531,984,96080,415,360
Size507.3 MB 76.7 MB
Events in quadrant A3,322,233505,423
Events in quadrant B4,059,185534,064
Events in quadrant C3,525,993480,073
Events in quadrant D4,751,954450,885

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138302
B0161051
C0141511
D0184631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6668961.439712%
B66681872.804439%
C6668711.064787%
D66681822.729454%

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 7514 6670 4 4 0.05% 0.06%
B 7514 6670 52 52 0.69% 0.78%
C 7514 6670 0 0 0.00% 0.00%
D 7514 6670 95 95 1.26% 1.42%

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 1 162 24047 135.51 842 824 171.4
A 15 69 19932 111.5 842 824 171.4
A 9 143 12599 68.71 842 824 171.4
B 0 219 435162 2749.08 841 826 158.0
B 3 64 215982 1361.81 841 826 158.0
B 0 229 33571 207.26 841 826 158.0
C 3 233 357589 1930.16 804 811 184.8
C 8 128 9448 46.73 804 811 184.8
C 14 234 8357 40.82 804 811 184.8
D 1 52 561361 2908.87 801 778 192.7
D 5 222 441773 2288.33 801 778 192.7
D 8 195 414562 2147.13 801 778 192.7

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