ASTROSAT CZTI

Data Quality Report

Orbit 20151224_G04_002T02_9000000230_level2

Creation date: 2016-09-06T17:56:07.618237
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1G04_002T02_9000000230cztM0_level2_bc.evt modeM0/AS1G04_002T02_9000000230cztM0_level2_quad_clean.evt
Size (bytes)16,876,036,8005,642,202,240
Size15.7 GB 5.3 GB
Events in quadrant A125,347,89636,541,420
Events in quadrant B100,307,19237,344,971
Events in quadrant C90,070,55236,714,780
Events in quadrant D169,569,03234,301,054

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077200
B077200
C077200
D077200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018068420
B017901960
C016186330
D019817660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05340
B05340
C05340
D05340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A379503158844.185474%
B37950341361.089846%
C37951113250.349133%
D379509354999.353928%

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 437356 379487 4045 4045 0.92% 1.07%
B 437356 379499 157 157 0.04% 0.04%
C 437356 379507 115 115 0.03% 0.03%
D 437356 379477 2045 2045 0.47% 0.54%

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 15 127 31307440 9095.66 16264 15888 3440.3
A 4 32 27259975 7919.16 16264 15888 3440.3
A 0 128 691550 196.4 16264 15888 3440.3
B 8 4 18666718 6188.44 16869 16364 3013.7
B 12 52 3157548 1042.29 16869 16364 3013.7
B 6 53 2904596 958.35 16869 16364 3013.7
C 15 241 16204166 4779.85 16230 15922 3386.8
C 3 9 4909127 1444.8 16230 15922 3386.8
C 3 79 1353523 394.95 16230 15922 3386.8
D 13 169 73025666 21689.93 15566 15107 3366.1
D 10 84 14559271 4320.77 15566 15107 3366.1
D 12 22 8237778 2442.79 15566 15107 3366.1

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
Veto Counter