ASTROSAT CZTI

Data Quality Report

Orbit 18640

Creation date: 2024-06-27T17:52:50.322770
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/AS1C04_001T01_9000002784_18640cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18640cztM0_level2_quad_clean.evt
Size (bytes)592,980,480111,159,360
Size565.5 MB 106.0 MB
Events in quadrant A3,173,408748,130
Events in quadrant B6,758,781712,291
Events in quadrant C3,208,662734,763
Events in quadrant D4,374,775714,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136331
B0246591
C0136331
D0172391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542500.764292%
B6543102015.589179%
C6543711.085129%
D65422083.179456%

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 7642 6542 1 1 0.01% 0.02%
B 7642 6542 711 711 9.30% 10.87%
C 7643 6543 0 0 0.00% 0.00%
D 7642 6542 155 155 2.03% 2.37%

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 0 13 28061 166.85 810 794 163.4
A 6 16 16451 95.81 810 794 163.4
A 13 254 9415 52.75 810 794 163.4
B 10 245 3561534 24845.71 758 740 143.3
B 12 18 67613 466.61 758 740 143.3
B 7 220 59216 408.02 758 740 143.3
C 14 238 122583 682.53 774 778 178.5
C 3 233 62358 345.06 774 778 178.5
C 9 54 5473 26.31 774 778 178.5
D 7 238 789803 4139.13 783 758 190.6
D 1 52 537805 2817.22 783 758 190.6
D 10 70 34899 179.1 783 758 190.6

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