ASTROSAT CZTI

Data Quality Report

Orbit 20160218_P01_069T01_9000000330_level2

Creation date: 2017-10-31T19:16:58.724730
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/AS1P01_069T01_9000000330cztM0_level2.evt modeM0/AS1P01_069T01_9000000330cztM0_level2_quad_clean.evt
Size (bytes)1,409,958,720365,693,760
Size1.3 GB 348.8 MB
Events in quadrant A10,262,0912,367,119
Events in quadrant B10,418,2002,414,679
Events in quadrant C10,053,9062,363,379
Events in quadrant D10,358,9852,298,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B130
C130
D110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497650
B0494030
C0493670
D0508510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A237373911.647217%
B237372851.200657%
C237372561.078485%
D237362230.939501%

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 24654 23742 95 95 0.39% 0.40%
B 24654 23742 0 0 0.00% 0.00%
C 24654 23742 17 17 0.07% 0.07%
D 24654 23742 101 101 0.41% 0.43%

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 0 199 338206 672.14 2563 2517 499.4
A 0 231 47334 89.73 2563 2517 499.4
A 0 128 20594 36.19 2563 2517 499.4
B 0 234 212775 436.69 2649 2590 481.3
B 5 68 57718 114.54 2649 2590 481.3
B 0 198 30247 57.46 2649 2590 481.3
C 5 234 91437 162.83 2515 2515 546.1
C 10 82 52968 92.39 2515 2515 546.1
C 10 65 19966 31.96 2515 2515 546.1
D 2 32 168470 297.62 2491 2431 557.9
D 2 31 163714 289.1 2491 2431 557.9
D 10 215 150807 265.96 2491 2431 557.9

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