ASTROSAT CZTI

Data Quality Report

Orbit 20200801_C05_007T01_9000003786_level2

Creation date: 2021-01-09T13:49:34.753534
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_007T01_9000003786cztM0_level2_bc.evt modeM0/AS1C05_007T01_9000003786cztM0_level2_quad_clean.evt
Size (bytes)2,571,598,080893,355,840
Size2.4 GB 852.0 MB
Events in quadrant A15,807,7235,773,215
Events in quadrant B15,752,0995,802,284
Events in quadrant C16,173,0415,472,103
Events in quadrant D25,524,1555,356,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01455330
B01460010
C01500410
D01794750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013820
B013820
C013820
D013820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A678839461.393574%
B6788311591.707349%
C6788315542.289233%
D6788322113.257075%

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 79643 67888 2 2 0.00% 0.00%
B 79643 67885 17 17 0.02% 0.03%
C 79643 67883 13 13 0.02% 0.02%
D 79643 67884 303 303 0.38% 0.45%

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 797355 949.23 3891 3833 836.0
A 13 254 102363 117.86 3891 3833 836.0
A 0 226 24963 25.28 3891 3833 836.0
B 5 172 409781 557.8 3902 3810 727.8
B 0 190 317575 431.11 3902 3810 727.8
B 0 230 50843 64.62 3902 3810 727.8
C 3 233 1109992 1288.27 3675 3656 858.8
C 2 16 932812 1081.95 3675 3656 858.8
C 13 61 21411 20.67 3675 3656 858.8
D 1 52 9372493 11078.73 3715 3622 845.7
D 12 233 974716 1148.32 3715 3622 845.7
D 7 38 341152 399.13 3715 3622 845.7

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