ASTROSAT CZTI

Data Quality Report

Orbit 14979

Creation date: 2024-06-27T17:02:04.727188
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/AS1T02_056T01_9000002210_14979cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14979cztM0_level2_quad_clean.evt
Size (bytes)473,443,20066,490,560
Size451.5 MB 63.4 MB
Events in quadrant A3,459,438399,874
Events in quadrant B3,855,416403,292
Events in quadrant C3,247,929388,784
Events in quadrant D3,342,408376,030

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141553
B0154442
C0133992
D0140842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6379370.580028%
B63791101.724408%
C6379170.266499%
D6379961.504938%

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 7630 6381 0 0 0.00% 0.00%
B 7630 6381 43 43 0.56% 0.67%
C 7630 6381 0 0 0.00% 0.00%
D 7630 6381 45 45 0.59% 0.71%

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 12 189 125633 744.99 831 815 167.5
A 1 162 59561 350.63 831 815 167.5
A 1 178 24060 138.74 831 815 167.5
B 3 64 363491 2353.61 829 810 154.1
B 10 16 73992 474.91 829 810 154.1
B 3 209 31165 196.99 829 810 154.1
C 3 233 145200 784.58 795 802 184.0
C 13 61 5888 27.63 795 802 184.0
C 8 222 2941 11.62 795 802 184.0
D 13 249 157962 797.31 790 767 197.2
D 7 38 102786 517.45 790 767 197.2
D 7 223 34609 171.65 790 767 197.2

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