ASTROSAT CZTI

Data Quality Report

Orbit 20171130_A04_231T01_9000001740_level2

Creation date: 2018-01-09T08:17:39.868344
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/AS1A04_231T01_9000001740cztM0_level2_bc.evt modeM0/AS1A04_231T01_9000001740cztM0_level2_quad_clean.evt
Size (bytes)3,350,355,840789,243,840
Size3.1 GB 752.7 MB
Events in quadrant A16,469,5425,155,195
Events in quadrant B37,945,2295,008,431
Events in quadrant C11,174,5935,305,943
Events in quadrant D32,102,2734,622,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01369780
B02045460
C01140740
D01937030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011300
B011300
C011300
D011300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0890
B0890
C0890
D0890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5550618323.300544%
B55506897116.162217%
C555066161.109790%
D55506828114.919108%

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 64642 55509 62 62 0.10% 0.11%
B 64642 55506 1320 1320 2.04% 2.38%
C 64642 55512 3 3 0.00% 0.01%
D 64642 55507 2069 2069 3.20% 3.73%

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 8 15 3891837 6448.84 2769 2710 603.1
A 5 16 607007 1002.03 2769 2710 603.1
A 1 162 538311 888.12 2769 2710 603.1
B 10 16 18119255 35031.38 2713 2646 517.2
B 4 239 3553752 6866.64 2713 2646 517.2
B 15 204 2645971 5111.29 2713 2646 517.2
C 14 234 50960 77.67 2815 2778 620.4
C 12 4 23391 33.23 2815 2778 620.4
C 8 128 22102 31.15 2815 2778 620.4
D 1 52 14722984 24095.64 2610 2515 610.9
D 13 137 3520807 5759.02 2610 2515 610.9
D 10 199 595745 971.05 2610 2515 610.9

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