ASTROSAT CZTI

Data Quality Report

Orbit 15820

Creation date: 2024-06-27T17:13:58.513472
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_143T01_9000002344_15820cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15820cztM0_level2_quad_clean.evt
Size (bytes)278,447,04057,470,400
Size265.5 MB 54.8 MB
Events in quadrant A2,022,715366,146
Events in quadrant B2,115,566380,026
Events in quadrant C2,035,830362,952
Events in quadrant D1,991,087354,364

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084002
B086911
C083621
D083761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3919390.995152%
B3919571.454453%
C3919370.944118%
D3919100.255167%

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 5260 3921 4 4 0.08% 0.10%
B 5260 3921 2 2 0.04% 0.05%
C 5260 3921 0 0 0.00% 0.00%
D 5260 3921 3 3 0.06% 0.08%

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 13 248 48483 456.82 512 502 105.0
A 15 239 6601 58.07 512 502 105.0
A 0 226 4567 38.7 512 502 105.0
B 4 173 32720 323.95 515 502 99.5
B 0 230 18435 180.32 515 502 99.5
B 3 209 11669 112.28 515 502 99.5
C 14 238 75308 643.32 497 502 116.3
C 9 54 7279 58.28 497 502 116.3
C 3 233 5823 45.76 497 502 116.3
D 1 52 27907 203.76 499 489 134.6
D 2 152 18529 134.06 499 489 134.6
D 2 234 16200 116.76 499 489 134.6

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