ASTROSAT CZTI

Data Quality Report

Orbit 41704

Creation date: 2024-06-27T22:31:49.140299
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/AS1A12_077T12_9000005692_41704cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41704cztM0_level2_quad_clean.evt
Size (bytes)364,201,920104,166,720
Size347.3 MB 99.3 MB
Events in quadrant A3,346,647712,229
Events in quadrant B2,955,169732,012
Events in quadrant C3,114,592672,512
Events in quadrant D3,598,699619,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134662
B0124822
C0128172
D0145852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5993200.333723%
B5994170.283617%
C5994851.418085%
D59941582.635969%

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 9580 5995 3 3 0.03% 0.05%
B 9581 5996 8 8 0.08% 0.13%
C 9581 5996 79 79 0.82% 1.32%
D 9581 5996 147 147 1.53% 2.45%

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 10 83 566648 3903.72 704 690 145.0
A 13 248 23523 157.49 704 690 145.0
A 2 79 15361 101.19 704 690 145.0
B 0 245 215394 1590.18 693 676 135.0
B 12 111 17221 122.53 693 676 135.0
B 11 111 16053 113.88 693 676 135.0
C 15 214 247141 1563.05 675 680 157.7
C 0 10 224587 1420.01 675 680 157.7
C 15 111 12697 76.21 675 680 157.7
D 13 249 390615 2376.74 673 655 164.1
D 2 249 276413 1680.7 673 655 164.1
D 2 120 172479 1047.24 673 655 164.1

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