ASTROSAT CZTI

Data Quality Report

Orbit 20200313_A07_027T15_9000003562_level2

Creation date: 2020-03-16T15:31:14.462615
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_027T15_9000003562cztM0_level2_bc.evt modeM0/AS1A07_027T15_9000003562cztM0_level2_quad_clean.evt
Size (bytes)835,274,880252,411,840
Size796.6 MB 240.7 MB
Events in quadrant A4,936,7001,605,594
Events in quadrant B4,885,4101,616,821
Events in quadrant C4,579,0851,542,503
Events in quadrant D9,520,5061,495,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0434280
B0432900
C0430270
D0605750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A201021670.830763%
B201021810.900408%
C201022311.149139%
D2010210965.452194%

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 33033 20100 5 5 0.02% 0.02%
B 33033 20101 3 3 0.01% 0.01%
C 33033 20103 0 0 0.00% 0.00%
D 33033 20101 174 174 0.53% 0.87%

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 6 16 74951 282.32 1242 1226 261.1
A 2 250 74599 280.97 1242 1226 261.1
A 13 254 33103 122.07 1242 1226 261.1
B 0 190 62350 268.47 1231 1208 227.7
B 5 172 34210 144.91 1231 1208 227.7
B 15 33 27300 114.57 1231 1208 227.7
C 0 239 60242 218.77 1172 1172 270.0
C 7 247 19658 68.46 1172 1172 270.0
C 13 61 6984 21.53 1172 1172 270.0
D 8 195 2488468 9260.81 1190 1155 268.6
D 1 52 901822 3353.38 1190 1155 268.6
D 11 176 738285 2744.5 1190 1155 268.6

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