ASTROSAT CZTI

Data Quality Report

Orbit 19914

Creation date: 2024-06-27T18:08:42.221672
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_064T01_9000002964_19914cztM0_level2.evt modeM0/AS1A05_064T01_9000002964_19914cztM0_level2_quad_clean.evt
Size (bytes)698,463,360106,885,440
Size666.1 MB 101.9 MB
Events in quadrant A2,834,590762,162
Events in quadrant B5,319,094741,950
Events in quadrant C3,790,565725,160
Events in quadrant D8,810,002593,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123980
B0200430
C0151420
D0303550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5912360.608931%
B59131893.196347%
C59132664.498562%
D5913178830.238458%

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 7052 5913 3 3 0.04% 0.05%
B 7053 5914 94 94 1.33% 1.59%
C 7053 5913 122 122 1.73% 2.06%
D 7052 5912 1810 1810 25.67% 30.62%

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 5 16 28242 190.21 722 708 144.8
A 9 143 22502 150.56 722 708 144.8
A 0 226 6445 39.63 722 708 144.8
B 3 112 2232224 16765.2 712 694 133.1
B 0 190 129848 970.32 712 694 133.1
B 0 197 28771 210.94 712 694 133.1
C 9 221 844718 5321.44 686 692 158.6
C 4 254 121926 764.36 686 692 158.6
C 14 238 107486 673.32 686 692 158.6
D 7 38 3867488 26212.09 610 591 147.5
D 2 184 1289487 8736.89 610 591 147.5
D 12 225 557725 3776.58 610 591 147.5

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