ASTROSAT CZTI

Data Quality Report

Orbit 08655

Creation date: 2024-06-27T15:35:30.996334
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/AS1G07_024T01_9000001206_08655cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08655cztM0_level2_quad_clean.evt
Size (bytes)463,590,720124,781,760
Size442.1 MB 119.0 MB
Events in quadrant A2,918,571835,101
Events in quadrant B3,136,409871,191
Events in quadrant C3,120,106862,978
Events in quadrant D4,434,105767,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130903
B0136552
C0136182
D0177722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337260.410289%
B6337360.568092%
C6337500.789017%
D63376059.547104%

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 7622 6338 0 0 0.00% 0.00%
B 7622 6338 2 2 0.03% 0.03%
C 7622 6337 16 16 0.21% 0.25%
D 7621 6336 418 418 5.48% 6.60%

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 8 5 60546 403.53 741 726 148.2
A 0 226 6986 42.23 741 726 148.2
A 12 194 6631 39.83 741 726 148.2
B 0 219 42837 300.42 762 746 140.1
B 0 230 18667 127.91 762 746 140.1
B 10 246 17816 121.83 762 746 140.1
C 4 254 146328 854.18 745 749 170.4
C 1 16 35041 201.21 745 749 170.4
C 8 128 9664 52.31 745 749 170.4
D 13 137 1004670 5941.28 698 676 169.0
D 2 152 334517 1975.55 698 676 169.0
D 12 233 220665 1301.82 698 676 169.0

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