ASTROSAT CZTI

Data Quality Report

Orbit 18463

Creation date: 2024-06-27T17:50:21.472128
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/AS1A05_144T02_9000002734_18463cztM0_level2.evt modeM0/AS1A05_144T02_9000002734_18463cztM0_level2_quad_clean.evt
Size (bytes)1,538,660,160264,473,280
Size1.4 GB 252.2 MB
Events in quadrant A13,473,0751,662,145
Events in quadrant B11,858,2121,759,165
Events in quadrant C8,712,4311,688,828
Events in quadrant D11,299,1751,618,215

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523994
B0476364
C0381004
D0462938

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18608206411.092003%
B1860913317.152453%
C186093011.617497%
D186086063.256664%

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 20728 18608 1268 1268 6.12% 6.81%
B 20729 18609 837 837 4.04% 4.50%
C 20729 18609 1 1 0.00% 0.01%
D 20727 18608 402 402 1.94% 2.16%

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 5159800 12353.36 2080 2029 417.5
A 15 174 126452 298.01 2080 2029 417.5
A 14 238 116233 273.53 2080 2029 417.5
B 15 222 2652792 6519.44 2151 2094 406.6
B 7 220 685521 1680.9 2151 2094 406.6
B 12 111 49358 116.25 2151 2094 406.6
C 14 238 326285 660.61 2105 2115 490.7
C 3 233 183135 368.89 2105 2115 490.7
C 13 61 15079 26.42 2105 2115 490.7
D 7 238 1916888 3735.26 2108 2043 512.6
D 8 230 645543 1255.27 2108 2043 512.6
D 13 168 282789 547.65 2108 2043 512.6

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