ASTROSAT CZTI

Data Quality Report

Orbit 20180111_A04_104T02_9000001838_level2

Creation date: 2018-07-31T15:48:03.547285
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_104T02_9000001838cztM0_level2_bc.evt modeM0/AS1A04_104T02_9000001838cztM0_level2_quad_clean.evt
Size (bytes)3,928,201,9201,330,738,560
Size3.7 GB 1.2 GB
Events in quadrant A22,583,3889,113,096
Events in quadrant B44,823,7228,527,696
Events in quadrant C14,523,0789,130,579
Events in quadrant D31,987,2588,444,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01937010
B02547900
C01513690
D02135140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015100
B015100
C015100
D015100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7421423273.135527%
B741781362518.367980%
C742143420.460829%
D7421453507.208882%

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 86055 74210 20 20 0.02% 0.03%
B 86055 74160 5960 5960 6.93% 8.04%
C 86055 74208 3 3 0.00% 0.00%
D 86055 74206 1279 1279 1.49% 1.72%

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 13 251 4495226 5602.31 3671 3612 801.7
A 1 162 1421997 1769.13 3671 3612 801.7
A 14 237 813748 1010.47 3671 3612 801.7
B 2 32 17930613 27102.2 3459 3367 661.5
B 2 48 7008705 10590.59 3459 3367 661.5
B 4 239 3692096 5576.58 3459 3367 661.5
C 14 234 174854 213.88 3606 3562 800.9
C 15 208 168891 206.43 3606 3562 800.9
C 6 96 26905 29.15 3606 3562 800.9
D 1 52 13121982 15693.7 3522 3392 835.9
D 10 199 1322847 1578.46 3522 3392 835.9
D 10 157 1045496 1246.66 3522 3392 835.9

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