ASTROSAT CZTI

Data Quality Report

Orbit 28302

Creation date: 2024-06-27T19:50:14.995240
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_102T10_9000004080_28302cztM0_level2.evt modeM0/AS1A10_102T10_9000004080_28302cztM0_level2_quad_clean.evt
Size (bytes)999,011,520188,228,160
Size952.7 MB 179.5 MB
Events in quadrant A7,544,9691,211,527
Events in quadrant B6,718,4971,245,796
Events in quadrant C6,222,0901,202,376
Events in quadrant D8,885,8421,137,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309990
B0284570
C0270300
D0355020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130683172.425773%
B130693162.417936%
C130692672.043003%
D130697055.394445%

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 14123 13071 103 103 0.73% 0.79%
B 14124 13072 61 61 0.43% 0.47%
C 14124 13072 0 0 0.00% 0.00%
D 14124 13072 514 514 3.64% 3.93%

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 15 174 1456573 4626.7 1576 1541 314.5
A 13 254 22031 65.15 1576 1541 314.5
A 3 137 15407 44.09 1576 1541 314.5
B 10 245 413891 1386.78 1567 1528 297.4
B 4 200 69389 228.22 1567 1528 297.4
B 10 246 66296 217.82 1567 1528 297.4
C 14 238 247612 704.92 1511 1517 349.1
C 3 233 89383 251.68 1511 1517 349.1
C 13 61 10335 25.26 1511 1517 349.1
D 8 195 1422356 3977.64 1495 1452 357.2
D 1 52 668803 1868.16 1495 1452 357.2
D 2 82 558685 1559.9 1495 1452 357.2

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