ASTROSAT CZTI

Data Quality Report

Orbit 10506

Creation date: 2024-06-27T16:00:17.308409
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/AS1A03_127T02_9000001522_10506cztM0_level2.evt modeM0/AS1A03_127T02_9000001522_10506cztM0_level2_quad_clean.evt
Size (bytes)1,300,613,760351,990,720
Size1.2 GB 335.7 MB
Events in quadrant A9,103,7542,148,151
Events in quadrant B8,438,1202,079,081
Events in quadrant C8,881,4772,517,932
Events in quadrant D11,659,9162,588,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06729
B07133
C07133
D06426

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011987080782
B012586389756
C09844558037
D011266264162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0988529
B0988531
C0988532
D0939496

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178901020.570151%
B169461040.613714%
C20018600.299730%
D21650700.323326%

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 35160 21307 0 0 0.00% 0.00%
B 35160 20396 0 0 0.00% 0.00%
C 35160 23322 0 0 0.00% 0.00%
D 35160 23049 0 0 0.00% 0.00%

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 15 239 941096 2286.61 2037 1994 410.7
A 3 80 238848 576.71 2037 1994 410.7
A 5 16 29622 67.27 2037 1994 410.7
B 4 239 500318 1367.53 1944 1896 364.5
B 11 51 139619 377.87 1944 1896 364.5
B 0 214 129586 350.34 1944 1896 364.5
C 13 61 16939 28.21 2273 2282 519.5
C 14 234 11429 17.61 2273 2282 519.5
C 8 222 7039 9.16 2273 2282 519.5
D 2 16 716007 1243.67 2426 2356 573.8
D 1 52 581346 1009.0 2426 2356 573.8
D 8 195 439803 762.33 2426 2356 573.8

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