ASTROSAT CZTI

Data Quality Report

Orbit 30784

Creation date: 2024-06-27T20:19:35.004411
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_071T18_9000004448_30784cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30784cztM0_level2_quad_clean.evt
Size (bytes)646,418,88090,532,800
Size616.5 MB 86.3 MB
Events in quadrant A3,175,174603,322
Events in quadrant B5,054,626595,800
Events in quadrant C3,626,492556,384
Events in quadrant D7,282,158532,823

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135212
B0196613
C0147082
D0263302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6502220.338357%
B6501560.861406%
C65012003.076450%
D65024416.782528%

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 8537 6503 1 1 0.01% 0.02%
B 8536 6502 1 1 0.01% 0.02%
C 8536 6502 93 93 1.09% 1.43%
D 8537 6504 585 585 6.85% 8.99%

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 12061 68.39 821 805 164.6
A 3 137 8100 44.32 821 805 164.6
A 0 226 6933 37.23 821 805 164.6
B 6 159 1834393 11863.36 810 791 154.6
B 12 111 19072 118.28 810 791 154.6
B 0 190 17367 107.25 810 791 154.6
C 0 10 358501 1963.79 772 779 182.2
C 14 238 124248 677.81 772 779 182.2
C 3 233 69839 379.12 772 779 182.2
D 8 195 4038699 19918.33 767 753 202.7
D 13 249 251349 1236.14 767 753 202.7
D 2 250 30366 146.07 767 753 202.7

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