ASTROSAT CZTI

Data Quality Report

Orbit 20180225_G08_045T01_9000001920_level2

Creation date: 2018-07-06T13:40:45.718946
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/AS1G08_045T01_9000001920cztM0_level2_bc.evt modeM0/AS1G08_045T01_9000001920cztM0_level2_quad_clean.evt
Size (bytes)2,930,178,240879,802,560
Size2.7 GB 839.0 MB
Events in quadrant A16,996,9185,726,310
Events in quadrant B30,042,4745,109,980
Events in quadrant C13,509,3725,808,581
Events in quadrant D23,638,4275,422,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013560
B013560
C013560
D013560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01477530
B02355880
C01367740
D01725590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A667749771.463144%
B667641536823.018393%
C667664670.699458%
D6677626804.013418%

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 77979 66801 58 58 0.07% 0.09%
B 77979 66545 735 735 0.94% 1.10%
C 77979 66803 3 3 0.00% 0.00%
D 77979 66804 524 524 0.67% 0.78%

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 1632232 2178.52 3414 3348 747.7
A 12 189 993273 1323.96 3414 3348 747.7
A 15 223 358162 474.54 3414 3348 747.7
B 4 239 11807039 21113.36 2908 2832 559.1
B 0 85 4349960 7775.4 2908 2832 559.1
B 3 64 1139536 2033.14 2908 2832 559.1
C 14 234 57231 71.59 3413 3381 752.2
C 12 4 27545 32.12 3413 3381 752.2
C 8 222 23166 26.3 3413 3381 752.2
D 1 52 7748628 9840.65 3352 3236 787.1
D 8 195 1319061 1671.78 3352 3236 787.1
D 14 34 830636 1051.23 3352 3236 787.1

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