ASTROSAT CZTI

Data Quality Report

Orbit 41918

Creation date: 2024-06-27T22:34:28.444233
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_118T01_9000005718_41918cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41918cztM0_level2_quad_clean.evt
Size (bytes)679,775,04075,231,360
Size648.3 MB 71.7 MB
Events in quadrant A3,880,963598,166
Events in quadrant B2,927,338618,879
Events in quadrant C3,153,389589,388
Events in quadrant D14,756,18371,117

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152843
B0128612
C0130192
D0473902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57252143.737991%
B5725861.502183%
C57252073.615721%
D5725507688.663755%

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 7278 5726 147 147 2.02% 2.57%
B 7278 5726 55 55 0.76% 0.96%
C 7278 5726 203 203 2.79% 3.55%
D 7278 5726 5050 5050 69.39% 88.19%

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 14 24 925909 7520.76 600 588 123.0
A 10 83 567146 4604.83 600 588 123.0
A 2 79 29216 232.68 600 588 123.0
B 12 0 310364 2622.42 606 588 118.1
B 5 255 74534 625.99 606 588 118.1
B 0 229 52724 441.36 606 588 118.1
C 0 10 594506 4293.84 585 589 138.3
C 15 214 226837 1635.71 585 589 138.3
C 0 15 51124 365.35 585 589 138.3
D 12 79 13300673 236418.04 226 219 56.3
D 13 249 207473 3683.98 226 219 56.3
D 12 6 113596 2015.3 226 219 56.3

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