ASTROSAT CZTI

Data Quality Report

Orbit 11638

Creation date: 2024-06-27T16:16:15.165138
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/AS1A04_026T01_9000001712_11638cztM0_level2.evt modeM0/AS1A04_026T01_9000001712_11638cztM0_level2_quad_clean.evt
Size (bytes)726,442,56086,074,560
Size692.8 MB 82.1 MB
Events in quadrant A6,320,548538,750
Events in quadrant B4,483,447564,951
Events in quadrant C3,077,817549,805
Events in quadrant D7,673,225492,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233782
B0173931
C0134601
D0273961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6599101215.335657%
B65994146.273678%
C6599941.424458%
D659987013.183816%

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 7755 6601 511 511 6.59% 7.74%
B 7755 6601 189 189 2.44% 2.86%
C 7755 6601 0 0 0.00% 0.00%
D 7755 6601 636 636 8.20% 9.63%

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 8 5 2646634 16556.78 790 776 159.8
A 1 162 239609 1494.53 790 776 159.8
A 1 178 138438 861.44 790 776 159.8
B 4 239 1137933 7388.39 814 795 153.9
B 0 219 74886 481.4 814 795 153.9
B 15 204 54946 351.84 814 795 153.9
C 13 61 5959 28.91 788 791 178.8
C 3 202 2051 7.05 788 791 178.8
C 12 4 2022 6.89 788 791 178.8
D 13 152 3424222 18709.41 761 736 183.0
D 10 253 655604 3578.86 761 736 183.0
D 13 104 192220 1046.46 761 736 183.0

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