ASTROSAT CZTI

Data Quality Report

Orbit 20200108_C05_002T03_9000003418_level2

Creation date: 2020-01-09T15:49:09.104734
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_002T03_9000003418cztM0_level2_bc.evt modeM0/AS1C05_002T03_9000003418cztM0_level2_quad_clean.evt
Size (bytes)282,309,120145,730,880
Size269.2 MB 139.0 MB
Events in quadrant A1,707,813964,925
Events in quadrant B1,778,0821,000,478
Events in quadrant C1,849,422969,545
Events in quadrant D2,663,224924,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163920
B0166000
C0170510
D0199860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7975330.413793%
B7975480.601881%
C79751421.780564%
D79753143.937304%

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 9360 7975 0 0 0.00% 0.00%
B 9360 7975 2 2 0.02% 0.03%
C 9360 7975 0 0 0.00% 0.00%
D 9360 7975 75 75 0.80% 0.94%

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 16229 163.75 438 430 96.5
A 13 254 10854 108.04 438 430 96.5
A 0 226 2806 24.63 438 430 96.5
B 14 207 23830 272.29 451 442 85.9
B 5 172 7933 87.21 451 442 85.9
B 4 216 5134 54.63 451 442 85.9
C 0 10 100152 955.16 434 433 104.4
C 7 247 37232 352.48 434 433 104.4
C 8 208 35649 337.32 434 433 104.4
D 1 52 521214 5073.69 433 419 102.6
D 2 136 317172 3085.87 433 419 102.6
D 7 238 63083 610.49 433 419 102.6

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