ASTROSAT CZTI

Data Quality Report

Orbit 20838

Creation date: 2024-06-27T18:20:07.463138
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_013T01_9000003070_20838cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20838cztM0_level2_quad_clean.evt
Size (bytes)991,105,920168,860,160
Size945.2 MB 161.0 MB
Events in quadrant A5,822,4601,115,617
Events in quadrant B6,243,3331,076,263
Events in quadrant C5,729,9861,053,544
Events in quadrant D11,414,0001,042,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0253402
B0262962
C0250982
D0429012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A119431040.870803%
B119441641.373074%
C119441351.130275%
D119443883.248493%

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 12673 11944 62 62 0.49% 0.52%
B 12674 11944 42 42 0.33% 0.35%
C 12674 11946 29 29 0.23% 0.24%
D 12674 11944 567 567 4.47% 4.75%

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 5 16 258225 881.48 1446 1419 291.3
A 0 226 12638 38.51 1446 1419 291.3
A 3 137 11544 34.75 1446 1419 291.3
B 0 189 194135 716.32 1423 1388 269.1
B 7 220 184507 680.54 1423 1388 269.1
B 3 64 128850 473.7 1423 1388 269.1
C 14 238 211631 654.9 1370 1380 321.0
C 9 54 159407 492.23 1370 1380 321.0
C 13 61 9508 25.32 1370 1380 321.0
D 1 20 5132000 15228.49 1390 1351 336.9
D 1 52 504929 1494.69 1390 1351 336.9
D 9 1 191833 565.38 1390 1351 336.9

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