ASTROSAT CZTI

Data Quality Report

Orbit 11909

Creation date: 2024-06-27T16:19:56.145177
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/AS1A04_088T05_9000001764_11909cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11909cztM0_level2_quad_clean.evt
Size (bytes)500,768,64093,265,920
Size477.6 MB 88.9 MB
Events in quadrant A3,443,285605,016
Events in quadrant B4,333,868584,030
Events in quadrant C2,943,434605,130
Events in quadrant D4,007,725580,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144052
B0172761
C0131801
D0162691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6449651.007908%
B64493275.070554%
C6449270.418670%
D64491762.729105%

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 7535 6450 2 2 0.03% 0.03%
B 7535 6450 200 200 2.65% 3.10%
C 7535 6450 0 0 0.00% 0.00%
D 7535 6450 117 117 1.55% 1.81%

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 15 157965 991.38 778 761 158.6
A 1 162 113724 712.38 778 761 158.6
A 1 178 57073 355.12 778 761 158.6
B 4 239 876241 6050.12 760 739 144.7
B 15 204 150436 1034.48 760 739 144.7
B 5 8 91085 624.33 760 739 144.7
C 13 61 5474 27.22 754 759 173.2
C 12 4 3759 17.32 754 759 173.2
C 14 234 2445 9.73 754 759 173.2
D 1 52 423304 2357.01 753 734 179.3
D 8 195 183572 1019.83 753 734 179.3
D 13 249 143074 793.94 753 734 179.3

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