ASTROSAT CZTI

Data Quality Report

Orbit 18061

Creation date: 2024-06-27T17:44:31.334048
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/AS1A06_003T04_9000002682_18061cztM0_level2.evt modeM0/AS1A06_003T04_9000002682_18061cztM0_level2_quad_clean.evt
Size (bytes)472,677,12090,316,800
Size450.8 MB 86.1 MB
Events in quadrant A3,294,151586,706
Events in quadrant B3,345,702590,697
Events in quadrant C3,223,504556,559
Events in quadrant D4,011,935549,324

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138892
B0140342
C0136322
D0161182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469370.571959%
B6469480.742000%
C6469480.742000%
D6469911.406709%

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 7634 6470 5 5 0.07% 0.08%
B 7634 6470 6 6 0.08% 0.09%
C 7634 6470 0 0 0.00% 0.00%
D 7634 6470 69 69 0.90% 1.07%

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 15 174 52346 303.43 835 820 169.8
A 4 2 24765 141.01 835 820 169.8
A 14 111 9746 52.56 835 820 169.8
B 0 197 55114 342.23 829 809 158.7
B 3 64 19966 120.73 829 809 158.7
B 12 111 18461 111.24 829 809 158.7
C 14 238 125026 681.28 785 792 182.4
C 3 233 22108 116.89 785 792 182.4
C 9 160 9556 48.06 785 792 182.4
D 11 176 459654 2353.36 801 780 195.0
D 5 222 310966 1590.81 801 780 195.0
D 15 145 48356 244.0 801 780 195.0

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