ASTROSAT CZTI

Data Quality Report

Orbit 20181104_A05_004T02_9000002490_level2

Creation date: 2018-11-06T13:40:37.470794
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/AS1A05_004T02_9000002490cztM0_level2_bc.evt modeM0/AS1A05_004T02_9000002490cztM0_level2_quad_clean.evt
Size (bytes)2,895,707,520688,708,800
Size2.7 GB 656.8 MB
Events in quadrant A17,562,3404,684,281
Events in quadrant B12,525,3304,838,021
Events in quadrant C16,421,5274,615,930
Events in quadrant D37,691,4203,196,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010500
B010500
C010500
D010500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01351450
B01134580
C01306800
D02434640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5125232436.327558%
B512528741.705299%
C5125215813.084758%
D512521918937.440490%

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 60043 51247 281 281 0.47% 0.55%
B 60043 51252 19 19 0.03% 0.04%
C 60043 51254 12 12 0.02% 0.02%
D 60043 51154 2553 2553 4.25% 4.99%

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 15 174 6902695 11604.58 2756 2708 594.6
A 0 13 56173 89.92 2756 2708 594.6
A 8 144 18860 27.16 2756 2708 594.6
B 15 35 527948 1001.46 2817 2750 524.4
B 0 229 369601 699.52 2817 2750 524.4
B 3 209 170154 319.21 2817 2750 524.4
C 3 233 5438281 8711.93 2678 2666 623.9
C 0 207 674788 1077.24 2678 2666 623.9
C 7 247 17017 23.0 2678 2666 623.9
D 1 52 26123810 54107.69 2083 2011 482.8
D 12 110 2067730 4278.85 2083 2011 482.8
D 11 176 617628 1275.17 2083 2011 482.8

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