ASTROSAT CZTI

Data Quality Report

Orbit 19430

Creation date: 2024-06-27T18:02:51.401610
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/AS1A05_221T01_9000002888_19430cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19430cztM0_level2_quad_clean.evt
Size (bytes)539,712,00099,025,920
Size514.7 MB 94.4 MB
Events in quadrant A3,540,516630,685
Events in quadrant B3,685,767638,093
Events in quadrant C3,529,600622,374
Events in quadrant D5,090,379595,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152421
B0157971
C0151281
D0201961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7355280.380693%
B7356861.169114%
C7356690.938010%
D73563474.717238%

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 7690 7356 0 0 0.00% 0.00%
B 7691 7357 14 14 0.18% 0.19%
C 7691 7357 0 0 0.00% 0.00%
D 7691 7357 211 211 2.74% 2.87%

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 3 1 96435 524.75 889 868 182.1
A 13 254 12590 64.36 889 868 182.1
A 0 226 7750 37.79 889 868 182.1
B 7 220 111775 654.46 887 865 169.5
B 0 197 25744 146.81 887 865 169.5
B 15 32 24575 139.91 887 865 169.5
C 14 238 130769 632.06 861 866 205.5
C 9 221 28613 135.01 861 866 205.5
C 3 233 14945 68.5 861 866 205.5
D 12 218 1065646 5071.41 856 830 210.0
D 1 52 699145 3325.87 856 830 210.0
D 7 238 47805 223.73 856 830 210.0

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