ASTROSAT CZTI

Data Quality Report

Orbit 11518

Creation date: 2024-06-27T16:14:06.299033
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/AS1A04_021T06_9000001688_11518cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11518cztM0_level2_quad_clean.evt
Size (bytes)645,811,20064,005,120
Size615.9 MB 61.0 MB
Events in quadrant A7,136,376337,632
Events in quadrant B4,166,333374,937
Events in quadrant C3,053,314400,926
Events in quadrant D4,758,899366,903

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256362
B0165711
C0134321
D0185461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6555154723.600305%
B65552483.783371%
C6555360.549199%
D65553084.698703%

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 7626 6555 955 955 12.52% 14.57%
B 7626 6557 115 115 1.51% 1.75%
C 7626 6557 0 0 0.00% 0.00%
D 7626 6557 212 212 2.78% 3.23%

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 5 4376488 30945.77 692 675 141.4
A 13 251 33777 234.1 692 675 141.4
A 9 143 18964 129.34 692 675 141.4
B 4 239 592971 3954.9 790 772 149.7
B 3 64 176231 1171.77 790 772 149.7
B 10 245 109217 724.23 790 772 149.7
C 7 87 20924 112.01 776 784 179.8
C 12 4 6683 32.81 776 784 179.8
C 13 61 5713 27.41 776 784 179.8
D 1 52 1398412 7626.64 759 739 183.3
D 6 219 200594 1090.54 759 739 183.3
D 2 120 85842 464.38 759 739 183.3

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