ASTROSAT CZTI

Data Quality Report

Orbit 20594

Creation date: 2024-06-27T18:17:12.079381
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/AS1A06_003T04_9000003046_20594cztM0_level2.evt modeM0/AS1A06_003T04_9000003046_20594cztM0_level2_quad_clean.evt
Size (bytes)567,106,56083,062,080
Size540.8 MB 79.2 MB
Events in quadrant A3,289,145522,377
Events in quadrant B3,847,717531,248
Events in quadrant C3,425,569507,723
Events in quadrant D6,158,592486,752

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138331
B0155581
C0141281
D0230161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6692590.881650%
B66921141.703527%
C6693901.344688%
D66934336.469446%

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 7757 6693 0 0 0.00% 0.00%
B 7757 6693 23 23 0.30% 0.34%
C 7758 6694 0 0 0.00% 0.00%
D 7758 6694 356 356 4.59% 5.32%

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 12 16 13374 73.11 850 832 171.5
A 12 194 8052 42.09 850 832 171.5
A 0 226 7429 38.45 850 832 171.5
B 7 220 345198 2148.78 839 819 160.3
B 0 197 66338 408.81 839 819 160.3
B 0 190 53016 325.69 839 819 160.3
C 8 208 134425 712.13 803 810 187.6
C 14 238 127312 674.22 803 810 187.6
C 9 54 30175 156.51 803 810 187.6
D 5 222 2614498 13338.06 809 786 196.0
D 1 20 231505 1177.38 809 786 196.0
D 2 165 139870 709.76 809 786 196.0

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