ASTROSAT CZTI

Data Quality Report

Orbit 07830

Creation date: 2024-06-27T15:24:33.321984
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/AS1G06_077T02_9000001076_07830cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07830cztM0_level2_quad_clean.evt
Size (bytes)482,201,280102,588,480
Size459.9 MB 97.8 MB
Events in quadrant A3,160,039656,851
Events in quadrant B3,516,493678,084
Events in quadrant C4,006,406674,591
Events in quadrant D3,472,140637,001

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136783
B0145672
C0159872
D0147622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6604220.333131%
B66041031.559661%
C66042223.361599%
D6604310.469412%

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 7889 6605 0 0 0.00% 0.00%
B 7889 6605 55 55 0.70% 0.83%
C 7889 6605 169 169 2.14% 2.56%
D 7889 6605 17 17 0.22% 0.26%

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 15 239 21265 125.33 813 798 163.3
A 0 226 7605 41.68 813 798 163.3
A 12 194 7058 38.33 813 798 163.3
B 4 239 82683 529.11 826 809 154.7
B 5 255 50965 324.13 826 809 154.7
B 0 219 50518 321.24 826 809 154.7
C 8 229 679087 3652.49 805 812 185.7
C 1 16 181019 970.41 805 812 185.7
C 13 61 6139 28.68 805 812 185.7
D 2 136 150320 772.86 798 778 193.5
D 12 6 66360 338.94 798 778 193.5
D 2 152 56645 288.73 798 778 193.5

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