ASTROSAT CZTI

Data Quality Report

Orbit 11356

Creation date: 2024-06-27T16:11:45.341882
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/AS1G08_062T01_9000001660_11356cztM0_level2.evt modeM0/AS1G08_062T01_9000001660_11356cztM0_level2_quad_clean.evt
Size (bytes)730,437,120115,113,600
Size696.6 MB 109.8 MB
Events in quadrant A4,207,950740,291
Events in quadrant B6,109,028714,693
Events in quadrant C4,028,124737,171
Events in quadrant D7,170,886673,495

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183293
B0238532
C0181722
D0273642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89451071.196199%
B89456116.830632%
C8945480.536613%
D8945110512.353270%

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 10405 8947 1 1 0.01% 0.01%
B 10405 8947 405 405 3.89% 4.53%
C 10405 8947 0 0 0.00% 0.00%
D 10405 8947 802 802 7.71% 8.96%

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 1 162 41656 185.82 1057 1032 218.6
A 1 178 22715 99.18 1057 1032 218.6
A 13 251 22218 96.91 1057 1032 218.6
B 4 239 1915421 9650.14 1035 1009 198.4
B 3 189 37297 182.92 1035 1009 198.4
B 0 187 34896 170.82 1035 1009 198.4
C 13 61 7425 26.67 1032 1039 239.4
C 8 222 3849 11.74 1032 1039 239.4
C 3 202 2603 6.53 1032 1039 239.4
D 10 253 2612600 11417.92 953 927 228.7
D 2 120 279399 1217.44 953 927 228.7
D 13 152 242327 1055.37 953 927 228.7

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