ASTROSAT CZTI

Data Quality Report

Orbit 20200325_A07_047T08_9000003590_level2

Creation date: 2020-03-27T12:20:36.430992
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/AS1A07_047T08_9000003590cztM0_level2_bc.evt modeM0/AS1A07_047T08_9000003590cztM0_level2_quad_clean.evt
Size (bytes)2,289,536,640947,269,440
Size2.1 GB 903.4 MB
Events in quadrant A10,210,3426,565,900
Events in quadrant B10,738,4226,676,389
Events in quadrant C16,458,4246,306,078
Events in quadrant D28,793,7175,979,325

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09380
B09380
C09380
D09380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01010
B01010
C01010
D01010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0953420
B0980380
C01191660
D01588930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A461533190.691179%
B461535541.200355%
C461539201.993370%
D4615330976.710290%

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 56228 46147 0 0 0.00% 0.00%
B 56228 46147 1 1 0.00% 0.00%
C 56228 46145 14 14 0.02% 0.03%
D 56228 46144 679 679 1.21% 1.47%

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 13 254 69904 119.83 2638 2605 561.6
A 0 226 16768 25.22 2638 2605 561.6
A 2 79 16643 24.99 2638 2605 561.6
B 12 17 275123 554.18 2663 2611 491.7
B 15 33 121230 241.22 2663 2611 491.7
B 0 230 63004 122.82 2663 2611 491.7
C 7 247 5824941 9798.39 2536 2540 594.2
C 2 16 844725 1417.29 2536 2540 594.2
C 3 233 20810 30.75 2536 2540 594.2
D 8 195 9303895 15898.33 2528 2454 585.1
D 1 52 8225775 14055.58 2528 2454 585.1
D 12 233 894277 1524.33 2528 2454 585.1

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