ASTROSAT CZTI

Data Quality Report

Orbit 20171010_C03_004T01_9000001598_level2

Creation date: 2017-10-18T20:01:20.333252
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/AS1C03_004T01_9000001598cztM0_level2.evt modeM0/AS1C03_004T01_9000001598cztM0_level2_quad_clean.evt
Size (bytes)1,833,528,960262,221,120
Size1.7 GB 250.1 MB
Events in quadrant A27,812,6671,829,932
Events in quadrant B13,298,0382,291,032
Events in quadrant C10,317,6562,338,533
Events in quadrant D2,933,748283,291

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04400
C04400
D04460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0560
C0580
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0973780
B0532090
C0449250
D0108620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21417618728.888266%
B217218173.761337%
C21877700.319971%
D31371815.769844%

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 30028 22502 4941 4941 16.45% 21.96%
B 30028 22743 474 474 1.58% 2.08%
C 30028 22898 0 0 0.00% 0.00%
D 6539 3902 126 126 1.93% 3.23%

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 14 238 17179101 38068.72 2274 2229 451.2
A 8 5 1562873 3458.82 2274 2229 451.2
A 15 174 136372 297.3 2274 2229 451.2
B 4 239 2587439 5396.63 2630 2573 479.0
B 15 204 164666 338.41 2630 2573 479.0
B 0 214 112524 229.55 2630 2573 479.0
C 13 61 19473 28.24 2639 2654 595.6
C 8 128 10379 12.97 2639 2654 595.6
C 12 4 8565 9.92 2639 2654 595.6
D 1 52 862940 9954.85 353 342 86.7
D 11 129 241733 2785.78 353 342 86.7
D 8 195 162756 1874.35 353 342 86.7

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