ASTROSAT CZTI

Data Quality Report

Orbit 12089

Creation date: 2024-06-27T16:22:17.351496
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/AS1G08_065T01_9000001796_12089cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12089cztM0_level2_quad_clean.evt
Size (bytes)575,176,320102,297,600
Size548.5 MB 97.6 MB
Events in quadrant A4,107,052661,051
Events in quadrant B4,254,187664,723
Events in quadrant C3,253,941659,997
Events in quadrant D5,322,864617,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169904
B0174903
C0146543
D0206723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71011802.534854%
B71012443.436136%
C7101320.450641%
D71014456.266723%

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 7602 7104 49 49 0.64% 0.69%
B 7602 7104 102 102 1.34% 1.44%
C 7602 7104 0 0 0.00% 0.00%
D 7602 7104 320 320 4.21% 4.50%

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 13 251 447179 2607.59 842 826 171.2
A 1 162 156550 909.74 842 826 171.2
A 1 178 76260 440.69 842 826 171.2
B 4 239 685575 4269.36 844 822 160.4
B 15 204 135301 838.46 844 822 160.4
B 11 51 90253 557.59 844 822 160.4
C 8 208 12950 63.56 827 829 190.7
C 13 61 6167 27.99 827 829 190.7
C 12 4 5189 22.86 827 829 190.7
D 1 52 1247925 6453.36 801 778 193.3
D 8 195 391629 2022.46 801 778 193.3
D 14 34 142687 734.31 801 778 193.3

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