ASTROSAT CZTI

Data Quality Report

Orbit 14668

Creation date: 2024-06-27T16:58:15.736489
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/AS1A04_101T01_9000002170_14668cztM0_level2.evt modeM0/AS1A04_101T01_9000002170_14668cztM0_level2_quad_clean.evt
Size (bytes)558,028,80094,752,000
Size532.2 MB 90.4 MB
Events in quadrant A3,880,401590,085
Events in quadrant B3,827,271586,382
Events in quadrant C4,297,216586,712
Events in quadrant D4,374,350572,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164913
B0163942
C0174452
D0183752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7683750.976181%
B76831071.392685%
C7683590.767929%
D76832383.097748%

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 8434 7685 2 2 0.02% 0.03%
B 8434 7685 3 3 0.04% 0.04%
C 8434 7685 5 5 0.06% 0.07%
D 8434 7686 231 231 2.74% 3.01%

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 15 220214 1159.32 932 910 189.2
A 12 189 24317 123.74 932 910 189.2
A 0 253 21769 110.27 932 910 189.2
B 0 219 65884 361.26 929 903 179.9
B 0 205 41221 224.14 929 903 179.9
B 0 190 23341 124.74 929 903 179.9
C 3 233 743327 3482.12 904 912 213.2
C 0 207 28215 128.06 904 912 213.2
C 13 61 6412 25.8 904 912 213.2
D 10 199 388842 1649.35 888 868 235.2
D 9 1 271037 1148.54 888 868 235.2
D 1 52 154583 653.47 888 868 235.2

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