ASTROSAT CZTI

Data Quality Report

Orbit 08962

Creation date: 2024-06-27T15:39:28.998049
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/AS1A03_051T01_9000001242_08962cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08962cztM0_level2_quad_clean.evt
Size (bytes)514,846,08092,848,320
Size491.0 MB 88.5 MB
Events in quadrant A3,409,190607,076
Events in quadrant B3,105,576613,245
Events in quadrant C4,830,601578,942
Events in quadrant D3,817,499571,519

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014456271
B013467234
C019245500
D015774400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01322
B01320
C01322
D01322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63161502.374921%
B63271382.181128%
C628882113.056616%
D63062534.012052%

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 7114 6435 26 26 0.37% 0.40%
B 7114 6434 2 2 0.03% 0.03%
C 7114 6421 458 458 6.44% 7.13%
D 7114 6425 119 119 1.67% 1.85%

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 5 16 179907 1153.3 761 745 155.3
A 8 5 170219 1090.94 761 745 155.3
A 15 174 129958 831.77 761 745 155.3
B 6 51 45004 302.62 762 742 146.3
B 0 214 37784 253.26 762 742 146.3
B 12 111 15309 99.59 762 742 146.3
C 4 254 2117034 13353.72 685 688 158.5
C 14 234 20026 122.02 685 688 158.5
C 4 238 19024 115.7 685 688 158.5
D 13 104 439508 2242.83 724 708 195.6
D 1 52 219579 1118.71 724 708 195.6
D 8 195 214908 1094.84 724 708 195.6

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