ASTROSAT CZTI

Data Quality Report

Orbit 36603

Creation date: 2024-06-27T21:29:01.785757
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_097T24_9000005224_36603cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36603cztM0_level2_quad_clean.evt
Size (bytes)491,048,64069,287,040
Size468.3 MB 66.1 MB
Events in quadrant A2,810,916437,185
Events in quadrant B2,773,385442,005
Events in quadrant C3,589,816416,453
Events in quadrant D5,308,487401,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120483
B0119632
C0141572
D0197562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5728130.226955%
B5728140.244413%
C57281462.548883%
D57284217.349860%

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 8774 5730 5 5 0.06% 0.09%
B 8774 5730 1 1 0.01% 0.02%
C 8774 5730 113 113 1.29% 1.97%
D 8774 5730 421 421 4.80% 7.35%

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 207487 1570.92 656 643 131.7
A 15 223 45262 338.87 656 643 131.7
A 9 143 21379 157.48 656 643 131.7
B 0 190 66872 524.29 653 636 126.3
B 0 213 55680 435.7 653 636 126.3
B 4 171 30510 236.47 653 636 126.3
C 0 207 479987 3258.42 630 631 147.1
C 0 10 368621 2501.41 630 631 147.1
C 15 214 243907 1653.67 630 631 147.1
D 12 235 2313279 15286.21 621 603 151.3
D 2 250 191463 1261.54 621 603 151.3
D 13 249 88034 577.9 621 603 151.3

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