ASTROSAT CZTI

Data Quality Report

Orbit 20161219_A02_111T01_9000000900_level2

Creation date: 2017-09-22T13:20:35.410193
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/AS1A02_111T01_9000000900cztM0_level2.evt modeM0/AS1A02_111T01_9000000900cztM0_level2_quad_clean.evt
Size (bytes)1,937,136,960337,613,760
Size1.8 GB 322.0 MB
Events in quadrant A11,318,9662,210,573
Events in quadrant B12,155,0472,229,241
Events in quadrant C10,205,9932,203,762
Events in quadrant D23,412,0351,974,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502740
B0520590
C0474840
D0861720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04740
B04740
C04740
D04740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A233694561.951303%
B233695292.263683%
C233692130.911464%
D2336921529.208781%

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 26594 23372 65 65 0.24% 0.28%
B 26594 23373 130 130 0.49% 0.56%
C 26594 23373 0 0 0.00% 0.00%
D 26594 23373 1575 1575 5.92% 6.74%

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 15 239 719740 1333.07 2663 2599 538.0
A 13 248 219274 402.77 2663 2599 538.0
A 8 15 86372 155.72 2663 2599 538.0
B 0 219 526599 1040.94 2689 2625 503.4
B 4 48 384783 759.21 2689 2625 503.4
B 0 228 323424 637.31 2689 2625 503.4
C 13 61 20764 30.3 2606 2619 598.9
C 8 128 19366 27.96 2606 2619 598.9
C 8 112 10892 13.81 2606 2619 598.9
D 8 195 7877234 12910.38 2506 2423 610.0
D 2 33 4162466 6820.19 2506 2423 610.0
D 2 63 337280 548.98 2506 2423 610.0

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