ASTROSAT CZTI

Data Quality Report

Orbit 27916

Creation date: 2024-06-27T19:45:55.969275
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/AS1A10_048T06_9000004030_27916cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27916cztM0_level2_quad_clean.evt
Size (bytes)1,473,523,200224,913,600
Size1.4 GB 214.5 MB
Events in quadrant A8,876,2981,420,252
Events in quadrant B10,836,3031,428,885
Events in quadrant C9,354,7921,361,030
Events in quadrant D14,287,9921,304,088

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0386290
B0440940
C0395490
D0549710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188351480.785771%
B188353241.720202%
C188353822.028139%
D1883510055.335811%

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 21080 18836 0 0 0.00% 0.00%
B 21080 18836 68 68 0.32% 0.36%
C 21080 18835 58 58 0.28% 0.31%
D 21080 18835 716 716 3.40% 3.80%

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 31637 63.56 2289 2244 462.5
A 15 174 24876 48.94 2289 2244 462.5
A 3 137 22579 43.97 2289 2244 462.5
B 10 245 1640336 3760.41 2272 2214 435.6
B 0 230 77913 173.77 2272 2214 435.6
B 15 32 77311 172.39 2272 2214 435.6
C 3 233 394274 765.48 2183 2193 512.2
C 14 238 349761 678.58 2183 2193 512.2
C 15 208 56236 105.51 2183 2193 512.2
D 1 52 3845126 7387.19 2160 2101 520.2
D 8 195 1764067 3386.91 2160 2101 520.2
D 2 250 265166 505.67 2160 2101 520.2

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