ASTROSAT CZTI

Data Quality Report

Orbit 34157

Creation date: 2024-06-27T20:57:13.372716
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/AS1A11_054T07_9000004878_34157cztM0_level2.evt modeM0/AS1A11_054T07_9000004878_34157cztM0_level2_quad_clean.evt
Size (bytes)439,810,56070,822,080
Size419.4 MB 67.5 MB
Events in quadrant A2,526,688444,565
Events in quadrant B3,580,641449,965
Events in quadrant C3,205,288446,051
Events in quadrant D3,639,624425,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110953
B0142462
C0129162
D0144672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A541070.129390%
B54102354.343808%
C54101302.402957%
D54101001.848429%

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 7112 5411 0 0 0.00% 0.00%
B 7112 5411 148 148 2.08% 2.74%
C 7112 5411 67 67 0.94% 1.24%
D 7112 5411 70 70 0.98% 1.29%

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 22107 165.22 644 631 130.0
A 13 6 9770 70.31 644 631 130.0
A 13 254 9598 68.99 644 631 130.0
B 5 31 448655 3618.94 638 622 123.8
B 5 15 215599 1736.46 638 622 123.8
B 5 255 189255 1523.66 638 622 123.8
C 0 10 467934 3223.49 623 630 145.0
C 15 214 231391 1591.8 623 630 145.0
C 9 187 38872 263.8 623 630 145.0
D 8 195 666666 4327.36 625 607 153.9
D 2 249 91886 593.04 625 607 153.9
D 13 249 89594 578.14 625 607 153.9

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