ASTROSAT CZTI

Data Quality Report

Orbit 20211205_A11_047T10_9000004802_level2

Creation date: 2021-12-07T17:54:53.229566
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/AS1A11_047T10_9000004802cztM0_level2_bc.evt modeM0/AS1A11_047T10_9000004802cztM0_level2_quad_clean.evt
Size (bytes)2,905,767,360801,155,520
Size2.7 GB 764.0 MB
Events in quadrant A12,292,1115,191,285
Events in quadrant B22,527,3645,109,269
Events in quadrant C16,006,7255,088,265
Events in quadrant D33,154,3944,819,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012080
B012080
C012080
D012080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01196850
B01592170
C01268070
D01883970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59176590.099703%
B5917627084.576180%
C591764720.797621%
D5917618763.170204%

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 86541 59178 0 0 0.00% 0.00%
B 86541 59175 112 112 0.13% 0.19%
C 86541 59177 112 112 0.13% 0.19%
D 86541 59177 107 107 0.12% 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 15 169 139090 200.24 3083 3031 679.5
A 13 254 105171 150.32 3083 3031 679.5
A 13 6 91979 130.91 3083 3031 679.5
B 5 172 3845269 6432.36 3033 2969 597.3
B 5 255 2250466 3762.52 3033 2969 597.3
B 0 213 1320568 2205.78 3033 2969 597.3
C 15 214 2426055 3589.26 2975 2950 675.1
C 0 10 633030 933.31 2975 2950 675.1
C 14 254 526768 775.91 2975 2950 675.1
D 8 195 15322532 20139.74 2954 2873 760.7
D 2 250 2494831 3276.01 2954 2873 760.7
D 2 249 1093936 1434.35 2954 2873 760.7

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