ASTROSAT CZTI

Data Quality Report

Orbit 20180524_A04_048T01_9000002114_level2

Creation date: 2018-05-26T21:40:49.370620
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_048T01_9000002114cztM0_level2_bc.evt modeM0/AS1A04_048T01_9000002114cztM0_level2_quad_clean.evt
Size (bytes)2,378,079,360745,392,960
Size2.2 GB 710.9 MB
Events in quadrant A13,555,4494,732,151
Events in quadrant B15,808,9004,736,900
Events in quadrant C17,454,3434,632,395
Events in quadrant D21,214,3304,459,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011960
B011960
C011960
D011960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01242370
B01345420
C01388470
D01517620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A585477831.337387%
B5854717272.949767%
C585476801.161460%
D5854719653.356278%

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 68384 58546 9 9 0.01% 0.02%
B 68384 58543 143 143 0.21% 0.24%
C 68384 58545 8 8 0.01% 0.01%
D 68384 58545 334 334 0.49% 0.57%

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 12 189 1409170 2072.41 3116 3058 678.5
A 8 15 52835 73.36 3116 3058 678.5
A 13 254 31279 41.59 3116 3058 678.5
B 10 16 1720552 2893.97 3130 3049 593.5
B 0 229 935871 1571.79 3130 3049 593.5
B 0 189 219576 364.85 3130 3049 593.5
C 3 233 5408318 8195.82 3039 3003 659.5
C 3 232 55400 79.45 3039 3003 659.5
C 14 234 48492 68.97 3039 3003 659.5
D 5 222 3248667 4674.67 3017 2936 694.3
D 12 110 2848879 4098.87 3017 2936 694.3
D 1 52 1664988 2393.77 3017 2936 694.3

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