ASTROSAT CZTI

Data Quality Report

Orbit 14873

Creation date: 2024-06-27T17:00:41.336532
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_148T02_9000002198_14873cztM0_level2.evt modeM0/AS1A04_148T02_9000002198_14873cztM0_level2_quad_clean.evt
Size (bytes)1,087,583,040199,912,320
Size1.0 GB 190.7 MB
Events in quadrant A7,158,8111,279,733
Events in quadrant B7,714,2231,268,830
Events in quadrant C7,183,6951,247,480
Events in quadrant D9,862,4671,219,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314954
B0331913
C0311273
D0402753

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15066780.517722%
B150661621.075269%
C15066590.391610%
D150664863.225806%

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 16822 15070 10 10 0.06% 0.07%
B 16822 15070 26 26 0.15% 0.17%
C 16822 15070 0 0 0.00% 0.00%
D 16822 15070 599 599 3.56% 3.97%

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 12 189 235808 652.79 1780 1743 358.6
A 9 143 49583 133.42 1780 1743 358.6
A 0 226 15842 39.32 1780 1743 358.6
B 0 219 188379 552.94 1771 1726 337.6
B 0 189 170868 501.06 1771 1726 337.6
B 0 205 97642 284.14 1771 1726 337.6
C 3 233 446692 1108.7 1720 1721 401.3
C 3 232 13047 28.22 1720 1721 401.3
C 8 128 12765 27.52 1720 1721 401.3
D 13 104 2175273 5334.52 1712 1668 407.5
D 7 254 728186 1783.04 1712 1668 407.5
D 10 70 203216 494.64 1712 1668 407.5

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