ASTROSAT CZTI

Data Quality Report

Orbit 35291

Creation date: 2022-04-09T10:49:36.426301
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/AS1A11_082T01_9000005056_35291cztM0_level2.evt modeM0/AS1A11_082T01_9000005056_35291cztM0_level2_quad_clean.evt
Size (bytes)532,958,40067,273,920
Size508.3 MB 64.2 MB
Events in quadrant A2,502,295451,208
Events in quadrant B6,481,368382,168
Events in quadrant C3,108,364441,367
Events in quadrant D3,722,328423,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101562
B0225491
C0123281
D0140321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4818140.290577%
B4818154832.129514%
C4818982.034039%
D48183637.534247%

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 6941 4819 6 6 0.09% 0.12%
B 6940 4818 1234 1234 17.78% 25.61%
C 6941 4819 86 86 1.24% 1.78%
D 6941 4819 332 332 4.78% 6.89%

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 83 72925 592.61 616 605 122.0
A 7 16 32771 263.57 616 605 122.0
A 13 6 9594 73.65 616 605 122.0
B 5 172 2575073 26576.0 515 505 96.9
B 5 236 1575975 16262.8 515 505 96.9
B 3 112 158349 1629.35 515 505 96.9
C 0 10 478285 3514.5 596 600 135.9
C 15 214 199909 1466.39 596 600 135.9
C 4 254 53265 387.48 596 600 135.9
D 7 80 367098 2596.55 585 572 141.2
D 10 118 364709 2579.63 585 572 141.2
D 2 249 153794 1085.46 585 572 141.2

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