ASTROSAT CZTI

Data Quality Report

Orbit 13547

Creation date: 2024-06-27T16:42:25.168377
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/AS1T02_038T01_9000001994_13547cztM0_level2.evt modeM0/AS1T02_038T01_9000001994_13547cztM0_level2_quad_clean.evt
Size (bytes)463,461,120101,986,560
Size442.0 MB 97.3 MB
Events in quadrant A3,171,062689,936
Events in quadrant B3,295,372687,477
Events in quadrant C3,412,623680,349
Events in quadrant D3,776,101638,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131522
B0134951
C0142421
D0148761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5608771.373039%
B5608961.711840%
C5608560.998573%
D56081662.960057%

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 6879 5609 5 5 0.07% 0.09%
B 6879 5609 17 17 0.25% 0.30%
C 6879 5609 1 1 0.01% 0.02%
D 6879 5609 79 79 1.15% 1.41%

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 69 24077 134.02 815 803 173.7
A 1 162 10308 54.73 815 803 173.7
A 0 226 7316 37.5 815 803 173.7
B 3 64 69295 435.78 798 785 157.2
B 4 142 37313 232.35 798 785 157.2
B 4 80 21993 134.9 798 785 157.2
C 3 233 373237 2022.67 779 788 184.1
C 13 61 5466 25.4 779 788 184.1
C 14 234 4667 21.07 779 788 184.1
D 2 14 244451 1273.26 777 758 191.4
D 13 122 238457 1241.94 777 758 191.4
D 8 195 207754 1081.52 777 758 191.4

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