ASTROSAT CZTI

Data Quality Report

Orbit 24243

Creation date: 2024-06-27T19:03:53.348861
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/AS1A07_118T01_9000003586_24243cztM0_level2.evt modeM0/AS1A07_118T01_9000003586_24243cztM0_level2_quad_clean.evt
Size (bytes)518,584,320104,523,840
Size494.6 MB 99.7 MB
Events in quadrant A3,261,362690,775
Events in quadrant B3,395,734715,792
Events in quadrant C3,565,529681,542
Events in quadrant D5,056,468638,447

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137512
B0141232
C0147722
D0193362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289470.747337%
B6289761.208459%
C6289991.574177%
D62892293.641278%

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 7554 6290 2 2 0.03% 0.03%
B 7554 6290 6 6 0.08% 0.10%
C 7554 6290 1 1 0.01% 0.02%
D 7554 6290 268 268 3.55% 4.26%

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 6 16 24605 142.46 835 820 167.0
A 3 1 15342 86.98 835 820 167.0
A 13 254 11534 64.17 835 820 167.0
B 15 33 78428 492.89 842 822 157.4
B 12 111 18488 112.2 842 822 157.4
B 11 111 16026 96.56 842 822 157.4
C 7 247 219035 1149.41 814 823 189.8
C 14 238 129269 676.58 814 823 189.8
C 2 16 38266 197.23 814 823 189.8
D 8 195 1474578 7552.91 806 785 195.1
D 1 52 425012 2174.08 806 785 195.1
D 7 38 66916 338.91 806 785 195.1

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