ASTROSAT CZTI

Data Quality Report

Orbit 50510

Creation date: 2025-01-29T13:49:31.484764
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/AS1T05_239T01_9000006444_50510cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50510cztM0_level2_quad_clean.evt
Size (bytes)620,795,52091,238,400
Size592.0 MB 87.0 MB
Events in quadrant A5,895,151571,123
Events in quadrant B3,534,734668,652
Events in quadrant C8,118,614500,242
Events in quadrant D4,914,707557,660

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220192
B0154891
C0288351
D0193281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A666473511.029412%
B66652403.600900%
C6665140621.095274%
D66652183.270818%

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 7408 6663 636 636 8.59% 9.55%
B 7410 6665 89 89 1.20% 1.34%
C 7409 6664 1354 1354 18.28% 20.32%
D 7409 6665 149 149 2.01% 2.24%

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 10 253 1938871 11577.23 680 665 167.4
A 9 96 428205 2553.77 680 665 167.4
A 12 250 231614 1379.5 680 665 167.4
B 7 0 299341 1989.26 702 677 150.1
B 8 234 89704 592.97 702 677 150.1
B 3 249 79006 521.71 702 677 150.1
C 15 235 2441963 13900.58 638 633 175.6
C 12 247 746351 4246.01 638 633 175.6
C 4 5 465845 2648.85 638 633 175.6
D 7 61 566716 3041.63 677 654 186.1
D 6 42 282900 1516.6 677 654 186.1
D 2 249 278673 1493.89 677 654 186.1

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