ASTROSAT CZTI

Data Quality Report

Orbit 20170803_G07_002T02_9000001432_level2

Creation date: 2021-08-27T18:47:09.807461
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G07_002T02_9000001432cztM0_level2_bc.evt modeM0/AS1G07_002T02_9000001432cztM0_level2_quad_clean.evt
Size (bytes)2,022,770,880697,138,560
Size1.9 GB 664.8 MB
Events in quadrant A12,454,8444,395,120
Events in quadrant B11,341,3504,493,294
Events in quadrant C10,257,7994,338,999
Events in quadrant D23,510,9614,170,131

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011020
B011120
C011120
D011020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01164780
B01143060
C01113950
D01512040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0830
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542197231.333481%
B542097641.409360%
C541784070.751227%
D5405824934.611713%

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 63755 54807 28 28 0.04% 0.05%
B 63755 54783 4 4 0.01% 0.01%
C 63755 54812 0 0 0.00% 0.00%
D 63755 54713 237 237 0.37% 0.43%

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 1730751 2922.73 2712 2656 591.3
A 14 111 204340 341.11 2712 2656 591.3
A 13 14 42750 67.81 2712 2656 591.3
B 0 219 164342 310.77 2758 2682 520.2
B 0 214 115971 217.78 2758 2682 520.2
B 4 81 113083 212.23 2758 2682 520.2
C 5 128 21180 33.93 2612 2583 548.0
C 13 61 15278 23.16 2612 2583 548.0
C 14 67 15150 22.93 2612 2583 548.0
D 8 195 4316835 6946.98 2624 2536 621.0
D 1 52 3635891 5850.51 2624 2536 621.0
D 12 233 1936892 3114.74 2624 2536 621.0

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