ASTROSAT CZTI

Data Quality Report

Orbit 28091

Creation date: 2024-06-27T19:47:57.562020
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_073T04_9000004058_28091cztM0_level2.evt modeM0/AS1A10_073T04_9000004058_28091cztM0_level2_quad_clean.evt
Size (bytes)389,698,56094,818,240
Size371.6 MB 90.4 MB
Events in quadrant A2,302,697654,943
Events in quadrant B2,332,296661,335
Events in quadrant C2,562,938630,128
Events in quadrant D4,258,409569,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103330
B0104110
C0109160
D0162990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5080160.314961%
B5081180.354261%
C5081671.318638%
D508171514.072033%

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 5915 5081 0 0 0.00% 0.00%
B 5916 5082 1 1 0.02% 0.02%
C 5916 5082 8 8 0.14% 0.16%
D 5916 5081 550 550 9.30% 10.82%

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 12016 96.17 593 581 118.9
A 13 254 7935 61.85 593 581 118.9
A 3 137 5751 43.48 593 581 118.9
B 12 111 13748 117.56 588 572 112.1
B 11 111 12570 107.05 588 572 112.1
B 4 52 11723 99.49 588 572 112.1
C 3 233 243615 1819.83 566 569 133.6
C 14 238 92823 690.76 566 569 133.6
C 15 208 20305 147.77 566 569 133.6
D 12 1 1341120 10648.31 530 515 125.9
D 8 195 314388 2493.07 530 515 125.9
D 1 52 274913 2179.52 530 515 125.9

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