ASTROSAT CZTI

Data Quality Report

Orbit 09438

Creation date: 2024-06-27T15:45:57.628081
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_178T01_9000001340_09438cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09438cztM0_level2_quad_clean.evt
Size (bytes)437,094,72088,318,080
Size416.8 MB 84.2 MB
Events in quadrant A3,477,589573,019
Events in quadrant B3,160,960568,156
Events in quadrant C2,949,734555,310
Events in quadrant D3,223,195540,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01282
B01280
C01282
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014623208
B013701207
C013268145
D014043185

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62551101.758593%
B62501081.728000%
C6273701.115894%
D62641091.740102%

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 7534 6337 4 4 0.05% 0.06%
B 7534 6333 3 3 0.04% 0.05%
C 7534 6337 1 1 0.01% 0.02%
D 7534 6334 58 58 0.77% 0.92%

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 8 5 428312 2711.54 779 765 157.7
A 1 162 19855 121.07 779 765 157.7
A 14 111 11713 69.43 779 765 157.7
B 0 229 68989 460.29 774 757 148.2
B 0 219 22032 143.52 774 757 148.2
B 0 246 20848 135.53 774 757 148.2
C 9 68 38825 218.63 743 749 174.2
C 13 61 5630 28.03 743 749 174.2
C 3 254 4092 19.2 743 749 174.2
D 8 195 115294 578.06 742 726 198.2
D 10 40 89864 449.75 742 726 198.2
D 12 227 82326 411.72 742 726 198.2

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