ASTROSAT CZTI

Data Quality Report

Orbit 03140

Creation date: 2024-06-27T14:25:08.532906
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/AS1T01_118T01_9000000430_03140cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03140cztM0_level2_quad_clean.evt
Size (bytes)482,561,28081,429,120
Size460.2 MB 77.7 MB
Events in quadrant A3,113,772514,515
Events in quadrant B3,311,761522,322
Events in quadrant C4,490,452498,374
Events in quadrant D3,270,533490,606

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131463
B0135572
C0174032
D0138662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6304390.618655%
B6304490.777284%
C63042804.441624%
D6304841.332487%

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 7594 6305 1 1 0.01% 0.02%
B 7594 6305 5 5 0.07% 0.08%
C 7594 6305 200 200 2.63% 3.17%
D 7594 6305 23 23 0.30% 0.36%

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 15 51658 319.4 785 768 159.3
A 0 149 13750 81.48 785 768 159.3
A 0 31 12652 74.59 785 768 159.3
B 15 204 102667 680.6 791 772 149.7
B 5 70 62327 411.15 791 772 149.7
B 3 0 27100 175.86 791 772 149.7
C 14 234 525644 2981.81 758 763 176.0
C 14 223 418150 2371.15 758 763 176.0
C 0 219 275126 1558.64 758 763 176.0
D 2 136 129411 697.06 766 746 184.6
D 12 233 70747 379.24 766 746 184.6
D 13 223 46401 247.34 766 746 184.6

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