ASTROSAT CZTI

Data Quality Report

Orbit 18744

Creation date: 2024-06-27T17:54:10.450770
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/AS1A05_072T04_9000002802_18744cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18744cztM0_level2_quad_clean.evt
Size (bytes)266,624,64038,321,280
Size254.3 MB 36.5 MB
Events in quadrant A1,983,570231,050
Events in quadrant B2,007,627233,696
Events in quadrant C1,866,918223,607
Events in quadrant D1,975,370221,497

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080790
B080810
C075960
D079720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A352450.141884%
B3525350.992908%
C3525170.482270%
D352560.170213%

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 3525 3525 1 1 0.03% 0.03%
B 3526 3526 20 20 0.57% 0.57%
C 3526 3526 0 0 0.00% 0.00%
D 3526 3526 4 4 0.11% 0.11%

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 15 191 111721 1156.84 472 464 96.2
A 15 192 53875 555.36 472 464 96.2
A 13 254 5786 55.34 472 464 96.2
B 7 220 151679 1730.1 461 451 87.4
B 4 216 19849 221.92 461 451 87.4
B 12 111 9338 101.67 461 451 87.4
C 14 238 71810 697.04 443 447 102.4
C 3 233 63393 614.83 443 447 102.4
C 13 61 3174 26.64 443 447 102.4
D 13 168 197013 1754.31 457 444 112.0
D 7 96 20609 179.97 457 444 112.0
D 2 234 15404 133.51 457 444 112.0

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