ASTROSAT CZTI

Data Quality Report

Orbit 20161218_A02_082T01_9000000898_level2

Creation date: 2017-09-22T11:26:58.493243
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_082T01_9000000898cztM0_level2.evt modeM0/AS1A02_082T01_9000000898cztM0_level2_quad_clean.evt
Size (bytes)4,925,761,920797,826,240
Size4.6 GB 760.9 MB
Events in quadrant A31,702,8214,984,707
Events in quadrant B33,443,8444,985,426
Events in quadrant C30,674,5754,890,138
Events in quadrant D48,811,3114,682,173

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013720
B013720
C013720
D013720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01402200
B01440720
C01386440
D01918660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6739911311.678066%
B6739913812.048992%
C673998591.274500%
D6739928384.210745%

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 77499 67412 9 9 0.01% 0.01%
B 77499 67412 182 182 0.23% 0.27%
C 77499 67412 0 0 0.00% 0.00%
D 77499 67412 1407 1407 1.82% 2.09%

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 640577 394.21 7997 7830 1605.1
A 14 111 197441 118.13 7997 7830 1605.1
A 0 226 75423 42.11 7997 7830 1605.1
B 0 219 1116044 718.93 8058 7855 1541.4
B 4 81 666650 427.39 8058 7855 1541.4
B 4 48 184391 114.53 8058 7855 1541.4
C 8 128 67823 33.07 7813 7848 1813.3
C 13 61 61130 29.38 7813 7848 1813.3
C 12 4 59610 28.54 7813 7848 1813.3
D 8 195 11231071 6028.08 7697 7476 1861.9
D 2 33 5412234 2902.84 7697 7476 1861.9
D 2 16 1290910 689.32 7697 7476 1861.9

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