ASTROSAT CZTI

Data Quality Report

Orbit 20200531_C05_002T10_9000003698_level2

Creation date: 2021-01-10T23:13:08.431967
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/AS1C05_002T10_9000003698cztM0_level2_bc.evt modeM0/AS1C05_002T10_9000003698cztM0_level2_quad_clean.evt
Size (bytes)239,342,40070,058,880
Size228.3 MB 66.8 MB
Events in quadrant A1,116,890445,047
Events in quadrant B1,422,158447,523
Events in quadrant C1,270,968428,379
Events in quadrant D3,053,914412,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114340
B0126180
C0122100
D0174260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5544230.414863%
B55441091.966089%
C5544881.587302%
D55441142.056277%

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 5844 5544 0 0 0.00% 0.00%
B 5844 5544 4 4 0.07% 0.07%
C 5844 5544 0 0 0.00% 0.00%
D 5844 5544 14 14 0.24% 0.25%

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 8567 125.7 287 279 65.9
A 13 254 7823 114.42 287 279 65.9
A 0 226 1854 23.89 287 279 65.9
B 3 64 261366 4524.87 286 279 57.7
B 3 112 52935 912.57 286 279 57.7
B 0 219 7210 120.12 286 279 57.7
C 0 239 122628 1829.14 276 273 66.9
C 3 233 33721 500.03 276 273 66.9
C 2 16 31292 463.72 276 273 66.9
D 8 195 1710313 25042.86 282 271 68.3
D 1 52 185272 2709.26 282 271 68.3
D 12 235 48754 710.01 282 271 68.3

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