ASTROSAT CZTI

Data Quality Report

Orbit 20200812_A09_038T03_9000003800_level2

Creation date: 2021-01-09T07:28:48.694970
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/AS1A09_038T03_9000003800cztM0_level2_bc.evt modeM0/AS1A09_038T03_9000003800cztM0_level2_quad_clean.evt
Size (bytes)268,822,080124,519,680
Size256.4 MB 118.8 MB
Events in quadrant A1,301,732836,099
Events in quadrant B1,365,154853,821
Events in quadrant C2,560,552809,057
Events in quadrant D2,455,035810,366

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135900
B0137350
C0184190
D0170110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66171782.690041%
B66172143.234094%
C66175147.767871%
D66172654.004836%

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 6977 6617 0 0 0.00% 0.00%
B 6977 6617 0 0 0.00% 0.00%
C 6977 6617 11 11 0.16% 0.17%
D 6977 6616 46 46 0.66% 0.70%

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 11439 145.76 334 327 76.2
A 13 254 9772 123.9 334 327 76.2
A 0 226 2098 23.23 334 327 76.2
B 0 219 40631 585.97 339 330 68.8
B 0 230 21028 300.95 339 330 68.8
B 15 185 5916 81.22 339 330 68.8
C 3 233 1043072 13346.45 322 322 78.1
C 0 239 265022 3387.97 322 322 78.1
C 2 16 9201 113.64 322 322 78.1
D 1 52 1122120 14170.16 330 320 79.2
D 2 234 30367 379.54 330 320 79.2
D 11 176 14265 176.15 330 320 79.2

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