ASTROSAT CZTI

Data Quality Report

Orbit 26898

Creation date: 2024-06-27T19:34:12.815489
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_038T17_9000003884_26898cztM0_level2.evt modeM0/AS1A09_038T17_9000003884_26898cztM0_level2_quad_clean.evt
Size (bytes)1,543,599,360300,179,520
Size1.4 GB 286.3 MB
Events in quadrant A9,496,7202,027,167
Events in quadrant B9,467,8712,083,164
Events in quadrant C8,358,5312,048,560
Events in quadrant D18,281,8181,763,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387900
B0385840
C0350500
D0656650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A169493972.342321%
B169505373.168142%
C169504402.595870%
D16950364421.498525%

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 19214 16950 50 50 0.26% 0.29%
B 19215 16951 110 110 0.57% 0.65%
C 19215 16951 3 3 0.02% 0.02%
D 19215 16952 3071 3071 15.98% 18.12%

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 0 13 1218926 2928.06 2093 2052 415.6
A 5 168 133067 315.25 2093 2052 415.6
A 6 16 82133 192.69 2093 2052 415.6
B 10 245 763060 1957.23 2082 2024 388.8
B 0 190 267351 682.37 2082 2024 388.8
B 3 64 233266 594.71 2082 2024 388.8
C 14 238 330311 698.81 2051 2066 469.7
C 15 208 32503 64.8 2051 2066 469.7
C 13 61 14015 25.44 2051 2066 469.7
D 1 52 7813842 18107.82 1863 1823 431.4
D 7 80 2817856 6527.41 1863 1823 431.4
D 11 176 405125 934.83 1863 1823 431.4

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