ASTROSAT CZTI

Data Quality Report

Orbit 51318

Creation date: 2025-03-24T23:22:32.459761
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/AS1C07_001T03_9000006456_51318cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51318cztM0_level2_quad_clean.evt
Size (bytes)835,833,60080,415,360
Size797.1 MB 76.7 MB
Events in quadrant A6,531,132594,132
Events in quadrant B4,202,426655,089
Events in quadrant C13,049,012238,803
Events in quadrant D6,651,247489,871

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240645
B0170001
C0432901
D0243611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65424156.343626%
B65433214.906006%
C6543420164.206022%
D654398315.023689%

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 7562 6542 210 210 2.78% 3.21%
B 7563 6543 196 196 2.59% 3.00%
C 7562 6542 4007 4007 52.99% 61.25%
D 7563 6543 849 849 11.23% 12.98%

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 3 2470507 14545.16 683 667 169.8
A 12 250 510500 3002.46 683 667 169.8
A 12 194 283498 1665.62 683 667 169.8
B 5 185 618877 4262.64 682 659 145.0
B 10 254 307164 2113.36 682 659 145.0
B 10 247 164420 1129.14 682 659 145.0
C 4 12 10935588 109305.28 356 352 100.0
C 3 233 176664 1762.36 356 352 100.0
C 13 3 131209 1308.01 356 352 100.0
D 2 216 1526314 8656.06 629 605 176.3
D 8 176 688188 3900.98 629 605 176.3
D 12 2 417925 2367.65 629 605 176.3

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