ASTROSAT CZTI

Data Quality Report

Orbit 31197

Creation date: 2024-06-27T20:24:52.180080
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_082T10_9000004512_31197cztM0_level2.evt modeM0/AS1A10_082T10_9000004512_31197cztM0_level2_quad_clean.evt
Size (bytes)163,630,08018,688,320
Size156.0 MB 17.8 MB
Events in quadrant A580,959140,386
Events in quadrant B1,455,944126,008
Events in quadrant C738,369129,277
Events in quadrant D2,098,18980,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023660
B050810
C028610
D070670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117030.256410%
B117123520.068318%
C1171564.782237%
D117163954.568745%

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 1170 1170 0 0 0.00% 0.00%
B 1170 1170 150 150 12.82% 12.82%
C 1171 1171 27 27 2.31% 2.31%
D 1171 1171 547 547 46.71% 46.71%

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 2196 63.96 150 146 32.0
A 3 137 1406 39.31 150 146 32.0
A 0 226 1314 36.44 150 146 32.0
B 4 80 450597 15997.36 138 135 28.2
B 6 159 394712 14012.7 138 135 28.2
B 4 171 21018 741.62 138 135 28.2
C 0 10 124319 3532.03 142 143 35.2
C 14 238 24268 686.21 142 143 35.2
C 4 175 15196 428.16 142 143 35.2
D 12 79 1465264 66936.4 84 82 21.9
D 8 195 193174 8821.35 84 82 21.9
D 13 249 58723 2679.0 84 82 21.9

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