ASTROSAT CZTI

Data Quality Report

Orbit 16963

Creation date: 2024-06-27T17:30:06.632250
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_188T01_9000002520_16963cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16963cztM0_level2_quad_clean.evt
Size (bytes)468,264,960101,620,800
Size446.6 MB 96.9 MB
Events in quadrant A3,156,136659,260
Events in quadrant B3,370,820681,112
Events in quadrant C3,432,399664,108
Events in quadrant D3,793,519632,649

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131802
B0138212
C0140792
D0153172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6305150.237906%
B6305410.650278%
C6305751.189532%
D63051201.903251%

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 7636 6307 0 0 0.00% 0.00%
B 7636 6307 5 5 0.07% 0.08%
C 7636 6307 0 0 0.00% 0.00%
D 7636 6307 86 86 1.13% 1.36%

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 11948 68.7 818 802 162.2
A 0 226 7331 40.24 818 802 162.2
A 12 194 6048 32.34 818 802 162.2
B 15 35 50904 329.26 827 807 152.1
B 7 220 23557 149.52 827 807 152.1
B 0 229 17858 112.07 827 807 152.1
C 14 238 126480 664.82 816 822 189.0
C 3 233 118316 621.62 816 822 189.0
C 13 61 5781 26.23 816 822 189.0
D 1 52 292448 1500.66 809 790 194.4
D 1 255 145107 742.55 809 790 194.4
D 11 129 103402 527.97 809 790 194.4

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