ASTROSAT CZTI

Data Quality Report

Orbit 20191016_A07_010T11_9000003240_level2

Creation date: 2019-10-18T10:36:08.831885
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_010T11_9000003240cztM0_level2_bc.evt modeM0/AS1A07_010T11_9000003240cztM0_level2_quad_clean.evt
Size (bytes)1,641,908,160505,474,560
Size1.5 GB 482.1 MB
Events in quadrant A7,480,8663,276,410
Events in quadrant B8,839,3013,321,294
Events in quadrant C7,316,1273,176,978
Events in quadrant D23,561,2852,990,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0756500
B0803730
C0764570
D01253840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07520
B07520
C07520
D07520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A370502260.609987%
B370497191.940673%
C370475571.503496%
D37042620916.762054%

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 39933 37068 2 2 0.01% 0.01%
B 39933 37065 137 137 0.34% 0.37%
C 39933 37065 10 10 0.03% 0.03%
D 39933 37058 3734 3734 9.35% 10.08%

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 5 16 225430 547.11 1861 1825 408.7
A 13 254 64728 153.91 1861 1825 408.7
A 4 2 34642 80.29 1861 1825 408.7
B 3 64 1199059 3362.22 1878 1830 356.1
B 0 197 142377 394.7 1878 1830 356.1
B 0 190 89774 246.98 1878 1830 356.1
C 10 22 334831 765.84 1807 1792 434.9
C 8 128 20369 42.72 1807 1792 434.9
C 10 91 11038 21.26 1807 1792 434.9
D 7 238 11785474 28654.13 1732 1669 411.2
D 1 52 4160893 10113.79 1732 1669 411.2
D 13 174 251129 606.6 1732 1669 411.2

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