ASTROSAT CZTI

Data Quality Report

Orbit 25426

Creation date: 2024-06-27T19:17:31.188842
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/AS1A09_047T01_9000003714_25426cztM0_level2.evt modeM0/AS1A09_047T01_9000003714_25426cztM0_level2_quad_clean.evt
Size (bytes)1,467,521,280230,811,840
Size1.4 GB 220.1 MB
Events in quadrant A10,514,0741,469,785
Events in quadrant B8,963,4771,481,591
Events in quadrant C9,268,7721,416,192
Events in quadrant D14,451,4581,349,453

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431500
B0381650
C0393790
D0558970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184691410.763441%
B184681470.795971%
C184682231.207494%
D184689044.894953%

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 20409 18469 0 0 0.00% 0.00%
B 20408 18469 0 0 0.00% 0.00%
C 20408 18469 20 20 0.10% 0.11%
D 20408 18468 632 632 3.10% 3.42%

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 1843433 4090.63 2242 2195 450.1
A 13 254 28866 59.25 2242 2195 450.1
A 3 137 21040 41.87 2242 2195 450.1
B 0 229 132016 307.78 2219 2160 421.9
B 0 190 82933 191.44 2219 2160 421.9
B 12 111 53080 120.69 2219 2160 421.9
C 7 247 606383 1218.75 2123 2136 495.8
C 14 238 339806 681.07 2123 2136 495.8
C 2 16 29245 54.68 2123 2136 495.8
D 8 195 2855277 5497.96 2125 2060 519.0
D 1 52 1753508 3374.93 2125 2060 519.0
D 7 238 1187423 2284.12 2125 2060 519.0

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