ASTROSAT CZTI

Data Quality Report

Orbit 20190910_A06_009T02_9000003152_level2

Creation date: 2019-09-12T14:39:26.292965
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_009T02_9000003152cztM0_level2_bc.evt modeM0/AS1A06_009T02_9000003152cztM0_level2_quad_clean.evt
Size (bytes)325,108,800131,336,640
Size310.0 MB 125.3 MB
Events in quadrant A1,925,905892,874
Events in quadrant B1,939,212890,905
Events in quadrant C2,463,812843,926
Events in quadrant D3,007,792837,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163430
B0166140
C0188510
D0200370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7375761.030508%
B7375961.301695%
C73751271.722034%
D73751461.979661%

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 8684 7373 0 0 0.00% 0.00%
B 8684 7373 10 10 0.12% 0.14%
C 8684 7374 0 0 0.00% 0.00%
D 8684 7374 13 13 0.15% 0.18%

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 5 168 147100 1503.81 448 442 97.5
A 12 96 28782 290.6 448 442 97.5
A 13 254 11409 112.45 448 442 97.5
B 0 190 54425 641.3 446 438 84.2
B 0 230 48740 573.77 446 438 84.2
B 3 64 34159 400.57 446 438 84.2
C 3 233 847401 8449.94 419 418 100.2
C 10 23 4048 36.21 419 418 100.2
C 13 61 2477 20.54 419 418 100.2
D 12 235 966485 9507.63 435 420 101.6
D 1 52 145432 1427.15 435 420 101.6
D 7 38 93767 918.68 435 420 101.6

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