ASTROSAT CZTI

Data Quality Report

Orbit 27485

Creation date: 2024-06-27T19:40:31.024313
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/AS1T03_249T01_9000003934_27485cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27485cztM0_level2_quad_clean.evt
Size (bytes)449,576,640103,242,240
Size428.7 MB 98.5 MB
Events in quadrant A3,140,515686,679
Events in quadrant B3,254,529700,961
Events in quadrant C3,418,732654,067
Events in quadrant D3,372,107643,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134300
B0137980
C0141870
D0144370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333490.773725%
B6333530.836886%
C6333991.563240%
D6333570.900047%

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 8558 6334 5 5 0.06% 0.08%
B 8558 6333 4 4 0.05% 0.06%
C 8558 6334 7 7 0.08% 0.11%
D 8558 6334 26 26 0.30% 0.41%

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 8 192 12192 70.45 808 793 161.8
A 13 254 10837 62.08 808 793 161.8
A 5 168 8507 47.68 808 793 161.8
B 3 64 37393 241.04 810 792 151.8
B 12 111 18599 117.27 810 792 151.8
B 11 111 16710 104.83 810 792 151.8
C 15 208 245276 1343.45 775 779 182.0
C 14 238 125314 684.29 775 779 182.0
C 10 22 13421 69.46 775 779 182.0
D 1 52 232251 1248.93 774 754 185.4
D 2 250 90766 485.62 774 754 185.4
D 12 227 80657 431.08 774 754 185.4

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