ASTROSAT CZTI

Data Quality Report

Orbit 34191

Creation date: 2022-01-24T07:59:37.630478
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/AS1A11_047T15_9000004882_34191cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34191cztM0_level2_quad_clean.evt
Size (bytes)883,350,720171,777,600
Size842.4 MB 163.8 MB
Events in quadrant A4,649,5371,168,921
Events in quadrant B7,694,2601,171,851
Events in quadrant C6,665,0731,142,124
Events in quadrant D7,122,2481,080,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01900
B01900
C01900
D01900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194114
B0292193
C0254183
D0274803

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A920880.086881%
B92084935.354040%
C92085816.309731%
D92082092.269765%

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 13392 9210 3 3 0.02% 0.03%
B 13392 9210 276 276 2.06% 3.00%
C 13392 9210 452 452 3.38% 4.91%
D 13392 9210 145 145 1.08% 1.57%

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 15 169 151359 657.23 1146 1128 228.6
A 10 83 33265 140.59 1146 1128 228.6
A 13 6 29507 124.15 1146 1128 228.6
B 5 31 1313213 6235.06 1132 1107 210.4
B 5 172 1004499 4768.06 1132 1107 210.4
B 5 15 616960 2926.5 1132 1107 210.4
C 14 254 772536 3106.78 1092 1105 248.3
C 0 239 671445 2699.65 1092 1105 248.3
C 0 10 419284 1684.13 1092 1105 248.3
D 8 195 1932614 7219.85 1094 1066 267.5
D 13 249 370408 1380.55 1094 1066 267.5
D 10 118 131789 488.62 1094 1066 267.5

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