ASTROSAT CZTI

Data Quality Report

Orbit 24783

Creation date: 2024-06-27T19:09:51.109838
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/AS1A07_147T01_9000003624_24783cztM0_level2.evt modeM0/AS1A07_147T01_9000003624_24783cztM0_level2_quad_clean.evt
Size (bytes)555,125,76093,260,160
Size529.4 MB 88.9 MB
Events in quadrant A3,594,274608,091
Events in quadrant B5,128,921586,121
Events in quadrant C3,748,451573,750
Events in quadrant D3,866,371569,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146542
B0195392
C0151322
D0156372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69841612.305269%
B698470910.151775%
C69852113.020759%
D69851331.904080%

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 9099 6987 0 0 0.00% 0.00%
B 9099 6987 349 349 3.84% 4.99%
C 9100 6988 0 0 0.00% 0.00%
D 9100 6988 4 4 0.04% 0.06%

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 13 254 8906 42.93 933 916 186.1
A 3 137 8512 40.82 933 916 186.1
A 0 226 8064 38.41 933 916 186.1
B 3 64 1622426 9451.36 891 870 171.6
B 12 111 21328 119.24 891 870 171.6
B 11 111 19595 109.14 891 870 171.6
C 14 238 141363 683.28 879 885 205.6
C 10 91 85041 409.33 879 885 205.6
C 8 208 54520 260.88 879 885 205.6
D 8 195 450375 2045.86 900 873 219.7
D 2 234 24882 109.27 900 873 219.7
D 1 52 11365 47.75 900 873 219.7

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