ASTROSAT CZTI

Data Quality Report

Orbit 07902

Creation date: 2024-06-27T15:25:19.887227
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/AS1A02_029T01_9000001082_07902cztM0_level2.evt modeM0/AS1A02_029T01_9000001082_07902cztM0_level2_quad_clean.evt
Size (bytes)447,569,280102,519,360
Size426.8 MB 97.8 MB
Events in quadrant A3,025,321670,304
Events in quadrant B3,150,294696,932
Events in quadrant C3,826,604672,441
Events in quadrant D3,136,022637,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129173
B0133552
C0154262
D0134182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6132480.782779%
B6132560.913242%
C6132951.549250%
D6132530.864318%

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 7452 6133 9 9 0.12% 0.15%
B 7452 6133 1 1 0.01% 0.02%
C 7452 6133 42 42 0.56% 0.68%
D 7452 6133 37 37 0.50% 0.60%

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 0 128 26792 169.66 758 742 153.5
A 0 52 19555 122.53 758 742 153.5
A 3 1 16792 104.53 758 742 153.5
B 4 173 40050 270.26 775 757 145.4
B 0 219 32715 219.81 775 757 145.4
B 4 239 26810 179.19 775 757 145.4
C 1 16 899516 5224.08 749 754 172.0
C 13 61 5869 29.73 749 754 172.0
C 12 4 3062 13.42 749 754 172.0
D 1 52 221014 1230.71 737 715 179.0
D 2 14 21799 117.78 737 715 179.0
D 12 233 21296 114.97 737 715 179.0

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