ASTROSAT CZTI

Data Quality Report

Orbit 20230728_A12_102T01_9000005798_level2

Creation date: 2023-08-02T11:13:27.118459
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/AS1A12_102T01_9000005798cztM0_level2.fits modeM0/AS1A12_102T01_9000005798cztM0_level2_quad_clean.evt
Size (bytes)690,802,560847,370,880
Size658.8 MB 808.1 MB
Events in quadrant A4,131,3865,353,308
Events in quadrant B3,928,4605,262,200
Events in quadrant C4,075,6805,104,808
Events in quadrant D3,497,3804,657,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02970
B02980
C02980
D02980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015800
B015800
C015800
D015800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01678710
B01629740
C01556450
D01964520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A771091710.221764%
B771096120.793682%
C77108480.062250%
D7710823873.095658%

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 124697 77109 0 0 0.00% 0.00%
B 124697 77096 0 0 0.00% 0.00%
C 124697 77109 0 0 0.00% 0.00%
D 124697 77070 0 0 0.00% 0.00%

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 7 110 3446 9.05 1080 1016 268.5
A 0 29 3339 8.65 1080 1016 268.5
A 9 19 3302 8.51 1080 1016 268.5
B 2 9 3399 12.24 1040 997 196.2
B 3 80 2906 9.73 1040 997 196.2
B 2 8 2794 9.16 1040 997 196.2
C 1 81 3412 8.64 1077 1010 278.1
C 3 202 3274 8.14 1077 1010 278.1
C 1 80 3223 7.96 1077 1010 278.1
D 4 160 2736 6.78 1002 915 268.5
D 3 14 2575 6.18 1002 915 268.5
D 10 189 2569 6.16 1002 915 268.5

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