ASTROSAT CZTI

Data Quality Report

Orbit 24099

Creation date: 2024-06-27T19:02:08.691085
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/AS1A07_027T15_9000003562_24099cztM0_level2.evt modeM0/AS1A07_027T15_9000003562_24099cztM0_level2_quad_clean.evt
Size (bytes)507,182,40092,488,320
Size483.7 MB 88.2 MB
Events in quadrant A3,460,985606,786
Events in quadrant B3,474,133609,491
Events in quadrant C3,396,906578,503
Events in quadrant D4,604,201569,861

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139662
B0139572
C0137522
D0177612

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6256410.655371%
B6256560.895141%
C6256590.943095%
D62562273.628517%

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 7546 6256 3 3 0.04% 0.05%
B 7546 6257 6 6 0.08% 0.10%
C 7546 6257 0 0 0.00% 0.00%
D 7546 6257 199 199 2.64% 3.18%

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 16393 88.55 890 876 175.2
A 2 250 15308 82.36 890 876 175.2
A 13 254 10500 54.92 890 876 175.2
B 0 190 45030 269.18 867 849 164.1
B 12 111 18608 108.2 867 849 164.1
B 11 111 16674 96.41 867 849 164.1
C 14 238 137053 705.4 835 844 193.1
C 13 61 5849 25.92 835 844 193.1
C 7 247 5242 22.78 835 844 193.1
D 1 52 783619 3796.75 855 832 206.2
D 12 233 420892 2037.42 855 832 206.2
D 8 195 104702 503.8 855 832 206.2

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