ASTROSAT CZTI

Data Quality Report

Orbit 20191002_A07_006T04_9000003210_level2

Creation date: 2019-10-03T18:37:38.080260
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_006T04_9000003210cztM0_level2_bc.evt modeM0/AS1A07_006T04_9000003210cztM0_level2_quad_clean.evt
Size (bytes)1,839,804,480679,939,200
Size1.7 GB 648.4 MB
Events in quadrant A10,037,8304,447,328
Events in quadrant B10,666,1564,490,685
Events in quadrant C11,628,7174,379,755
Events in quadrant D20,269,0934,139,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09280
B09280
C09280
D09280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0961490
B0993610
C01027760
D01301430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A457157661.675599%
B4571515293.344635%
C4571513783.014328%
D4571530536.678333%

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 54442 45719 9 9 0.02% 0.02%
B 54442 45705 166 166 0.30% 0.36%
C 54442 45718 21 21 0.04% 0.05%
D 54442 45712 569 569 1.05% 1.24%

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 4 2 563314 1102.08 2314 2269 509.1
A 15 236 505051 987.63 2314 2269 509.1
A 13 254 77773 148.32 2314 2269 509.1
B 3 64 941112 2118.1 2332 2275 443.2
B 0 229 328908 736.91 2332 2275 443.2
B 0 189 98580 217.27 2332 2275 443.2
C 8 208 2806262 5240.66 2255 2243 535.1
C 10 22 80687 146.61 2255 2243 535.1
C 10 23 40316 71.16 2255 2243 535.1
D 1 52 4070870 7683.01 2236 2150 529.6
D 7 238 2932551 5533.51 2236 2150 529.6
D 12 235 1936010 3651.73 2236 2150 529.6

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