ASTROSAT CZTI

Data Quality Report

Orbit 23395

Creation date: 2024-06-27T18:53:48.141046
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/AS1A07_127T02_9000003460_23395cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23395cztM0_level2_quad_clean.evt
Size (bytes)464,610,24095,080,320
Size443.1 MB 90.7 MB
Events in quadrant A3,240,585611,964
Events in quadrant B3,401,431615,255
Events in quadrant C3,461,162586,725
Events in quadrant D3,496,461582,526

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142082
B0145551
C0145421
D0151371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6934180.259590%
B6935540.778659%
C6935690.994953%
D6935941.355443%

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 7234 6935 0 0 0.00% 0.00%
B 7235 6936 11 11 0.15% 0.16%
C 7235 6936 0 0 0.00% 0.00%
D 7235 6936 73 73 1.01% 1.05%

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 13 254 9603 51.92 838 821 169.1
A 3 137 7411 38.96 838 821 169.1
A 0 226 7182 37.61 838 821 169.1
B 0 189 91594 568.31 833 812 159.7
B 0 229 19877 119.35 833 812 159.7
B 12 111 19223 115.26 833 812 159.7
C 10 9 180408 942.73 806 810 190.5
C 14 238 124082 647.07 806 810 190.5
C 0 207 5952 26.99 806 810 190.5
D 1 52 365133 1816.99 817 795 200.5
D 2 234 31472 152.99 817 795 200.5
D 2 120 29477 143.04 817 795 200.5

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