ASTROSAT CZTI

Data Quality Report

Orbit 30642

Creation date: 2024-06-27T20:18:04.222406
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/AS1A10_103T02_9000004416_30642cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30642cztM0_level2_quad_clean.evt
Size (bytes)707,984,64088,004,160
Size675.2 MB 83.9 MB
Events in quadrant A3,806,378578,123
Events in quadrant B4,850,818585,801
Events in quadrant C3,479,498563,226
Events in quadrant D8,903,818521,236

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150321
B0184952
C0140721
D0306591

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59572103.525264%
B59561031.729349%
C59561592.669577%
D595775812.724526%

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 7217 5958 114 114 1.58% 1.91%
B 7216 5957 0 0 0.00% 0.00%
C 7216 5957 18 18 0.25% 0.30%
D 7217 5958 768 768 10.64% 12.89%

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 0 13 636548 3963.55 818 805 160.4
A 13 254 10709 61.75 818 805 160.4
A 8 192 10167 58.37 818 805 160.4
B 6 159 1628593 11046.45 806 789 147.4
B 0 229 22434 146.89 806 789 147.4
B 0 190 20645 134.74 806 789 147.4
C 14 238 142399 775.77 794 801 182.5
C 0 10 119336 649.41 794 801 182.5
C 10 22 47946 258.29 794 801 182.5
D 8 195 5485368 27580.07 781 767 198.9
D 12 227 233348 1169.57 781 767 198.9
D 12 33 119686 598.0 781 767 198.9

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