ASTROSAT CZTI

Data Quality Report

Orbit 25340

Creation date: 2024-06-27T19:16:32.872659
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/AS1A09_059T01_9000003706_25340cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25340cztM0_level2_quad_clean.evt
Size (bytes)539,778,24080,112,960
Size514.8 MB 76.4 MB
Events in quadrant A3,228,771507,646
Events in quadrant B3,233,584514,234
Events in quadrant C3,642,039486,182
Events in quadrant D5,788,010450,153

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137760
B0137750
C0149840
D0220620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707600.894588%
B6707340.506933%
C67071622.415387%
D67074947.365439%

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 7707 6708 12 12 0.16% 0.18%
B 7707 6708 1 1 0.01% 0.01%
C 7707 6708 77 77 1.00% 1.15%
D 7707 6708 409 409 5.31% 6.10%

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 8 192 81032 490.26 817 799 163.7
A 13 254 9835 55.21 817 799 163.7
A 3 137 7410 40.4 817 799 163.7
B 12 111 19515 120.29 814 793 155.6
B 3 112 18277 112.33 814 793 155.6
B 11 111 17297 106.04 814 793 155.6
C 7 87 330895 1811.57 778 784 182.2
C 14 238 123047 670.95 778 784 182.2
C 3 233 115107 627.38 778 784 182.2
D 1 52 1687255 9026.11 769 745 186.8
D 8 195 872024 4663.04 769 745 186.8
D 12 235 169580 903.6 769 745 186.8

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