ASTROSAT CZTI

Data Quality Report

Orbit 20210609_C06_003T01_9000004452_level2

Creation date: 2021-06-11T11:37:20.597139
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1C06_003T01_9000004452cztM0_level2_bc.evt modeM0/AS1C06_003T01_9000004452cztM0_level2_quad_clean.evt
Size (bytes)4,728,867,8401,275,053,760
Size4.4 GB 1.2 GB
Events in quadrant A19,089,4198,728,746
Events in quadrant B42,434,8868,637,120
Events in quadrant C22,962,2088,299,007
Events in quadrant D53,297,8647,466,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01728490
B02522280
C01880660
D02997800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016300
B016300
C016300
D016300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8003316072.007922%
B8003329653.704722%
C8003324663.081229%
D800331132514.150413%

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 92328 80027 100 100 0.11% 0.12%
B 92328 80022 66 66 0.07% 0.08%
C 92328 80021 36 36 0.04% 0.04%
D 92328 80024 1738 1738 1.88% 2.17%

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 0 13 2345260 2529.86 4297 4238 925.4
A 13 254 144783 151.88 4297 4238 925.4
A 12 96 95969 99.13 4297 4238 925.4
B 6 159 22452615 27731.99 4288 4196 809.5
B 5 172 1388043 1709.56 4288 4196 809.5
B 4 80 539707 661.55 4288 4196 809.5
C 3 233 5850420 6046.2 4081 4080 966.9
C 0 10 979313 1008.57 4081 4080 966.9
C 2 114 156214 157.33 4081 4080 966.9
D 8 195 25466170 28112.64 3890 3799 905.7
D 12 218 7138899 7877.76 3890 3799 905.7
D 2 250 1463255 1611.36 3890 3799 905.7

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