ASTROSAT CZTI

Data Quality Report

Orbit 31385

Creation date: 2024-06-27T20:27:36.027176
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/AS1C06_006T05_9000004550_31385cztM0_level2.evt modeM0/AS1C06_006T05_9000004550_31385cztM0_level2_quad_clean.evt
Size (bytes)219,199,68035,444,160
Size209.0 MB 33.8 MB
Events in quadrant A1,388,038230,822
Events in quadrant B2,158,440225,642
Events in quadrant C1,385,258217,298
Events in quadrant D1,532,716217,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056051
B081913
C055731
D061121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25311013.990518%
B25301927.588933%
C25301365.375494%
D2530712.806324%

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 3191 2531 9 9 0.28% 0.36%
B 3190 2531 28 28 0.88% 1.11%
C 3190 2531 9 9 0.28% 0.36%
D 3190 2531 6 6 0.19% 0.24%

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 5 16 69737 986.3 340 331 70.4
A 13 170 6084 81.75 340 331 70.4
A 13 254 4653 61.42 340 331 70.4
B 6 159 667005 10020.16 330 321 66.5
B 5 172 84197 1260.64 330 321 66.5
B 0 190 53532 799.75 330 321 66.5
C 0 10 53313 685.54 321 322 77.3
C 14 238 50819 653.27 321 322 77.3
C 3 233 18303 232.62 321 322 77.3
D 8 195 190726 2310.91 334 324 82.4
D 10 203 33149 398.4 334 324 82.4
D 2 250 20975 250.64 334 324 82.4

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