ASTROSAT CZTI

Data Quality Report

Orbit 20190311_A06_005T01_9000002788_level2

Creation date: 2019-03-13T11:11:20.489709
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/AS1A06_005T01_9000002788cztM0_level2_bc.evt modeM0/AS1A06_005T01_9000002788cztM0_level2_quad_clean.evt
Size (bytes)2,770,205,760810,069,120
Size2.6 GB 772.5 MB
Events in quadrant A13,237,9055,468,487
Events in quadrant B13,271,4025,547,983
Events in quadrant C12,512,4095,286,074
Events in quadrant D40,810,9104,140,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012100
B012100
C012100
D012100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260220
B01258150
C01252850
D02464370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A596156001.006458%
B596167651.283213%
C596169101.526436%
D596151459724.485448%

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 68636 59614 3 3 0.00% 0.01%
B 68636 59611 8 8 0.01% 0.01%
C 68636 59611 3 3 0.00% 0.01%
D 68636 59604 3169 3169 4.62% 5.32%

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 15 192 598411 866.47 3176 3117 687.0
A 6 16 236561 339.79 3176 3117 687.0
A 13 254 89487 125.71 3176 3117 687.0
B 10 245 242649 397.69 3214 3139 602.3
B 4 80 188614 307.97 3214 3139 602.3
B 0 189 102043 164.22 3214 3139 602.3
C 3 233 451117 625.43 3053 3041 716.4
C 9 221 164562 225.45 3053 3041 716.4
C 9 54 145379 198.68 3053 3041 716.4
D 7 238 27992702 45105.57 2658 2566 620.5
D 1 52 2121014 3413.84 2658 2566 620.5
D 12 110 262591 419.02 2658 2566 620.5

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