ASTROSAT CZTI

Data Quality Report

Orbit 25371

Creation date: 2024-06-27T19:16:54.489601
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_104T01_9000003710_25371cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25371cztM0_level2_quad_clean.evt
Size (bytes)540,383,04099,115,200
Size515.3 MB 94.5 MB
Events in quadrant A3,276,033657,849
Events in quadrant B3,294,940663,080
Events in quadrant C3,228,090622,484
Events in quadrant D6,122,161601,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137050
B0137390
C0137050
D0226920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6545360.550038%
B6545610.932009%
C6545801.222307%
D6545107116.363636%

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 7635 6546 0 0 0.00% 0.00%
B 7635 6545 7 7 0.09% 0.11%
C 7635 6546 2 2 0.03% 0.03%
D 7635 6546 1002 1002 13.12% 15.31%

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 6 16 116064 709.93 818 802 162.4
A 13 254 9477 53.43 818 802 162.4
A 3 137 7331 40.21 818 802 162.4
B 3 112 90077 581.04 809 789 153.7
B 12 111 18554 115.61 809 789 153.7
B 11 111 16654 103.24 809 789 153.7
C 14 238 126386 697.73 770 774 180.0
C 7 87 74337 408.62 770 774 180.0
C 3 233 24388 131.17 770 774 180.0
D 7 238 2904404 16594.3 719 696 175.0
D 8 195 347076 1979.51 719 696 175.0
D 2 244 61741 348.86 719 696 175.0

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