ASTROSAT CZTI

Data Quality Report

Orbit 24409

Creation date: 2024-06-27T19:05:42.883796
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_001T02_9000003600_24409cztM0_level2.evt modeM0/AS1A07_001T02_9000003600_24409cztM0_level2_quad_clean.evt
Size (bytes)447,359,040109,480,320
Size426.6 MB 104.4 MB
Events in quadrant A3,117,148721,964
Events in quadrant B3,182,798734,751
Events in quadrant C3,193,130700,706
Events in quadrant D3,593,775685,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138811
B0139461
C0139241
D0153221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67791752.581502%
B67802012.964602%
C67802303.392330%
D67801732.551622%

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 6959 6781 0 0 0.00% 0.00%
B 6960 6782 0 0 0.00% 0.00%
C 6960 6782 0 0 0.00% 0.00%
D 6960 6782 14 14 0.20% 0.21%

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 13 254 10880 61.87 808 789 163.1
A 3 137 7523 41.29 808 789 163.1
A 0 226 6903 37.49 808 789 163.1
B 12 111 18940 118.52 803 783 153.2
B 0 190 17197 107.15 803 783 153.2
B 11 111 16915 105.31 803 783 153.2
C 14 238 121934 664.38 777 780 182.4
C 7 247 15153 78.82 777 780 182.4
C 3 233 14585 75.7 777 780 182.4
D 1 52 358607 1865.77 788 760 191.8
D 8 195 201041 1044.24 788 760 191.8
D 12 218 41024 209.93 788 760 191.8

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