ASTROSAT CZTI

Data Quality Report

Orbit 26026

Creation date: 2024-06-27T19:24:00.378225
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_033T02_9000003762_26026cztM0_level2.evt modeM0/AS1A09_033T02_9000003762_26026cztM0_level2_quad_clean.evt
Size (bytes)514,929,60087,672,960
Size491.1 MB 83.6 MB
Events in quadrant A3,706,356564,177
Events in quadrant B3,791,438563,726
Events in quadrant C3,578,698535,670
Events in quadrant D4,076,293537,039

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148830
B0151700
C0142800
D0161280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65161071.642112%
B65161442.209945%
C65161211.856967%
D65162023.100061%

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 7866 6516 11 11 0.14% 0.17%
B 7866 6516 43 43 0.55% 0.66%
C 7866 6516 0 0 0.00% 0.00%
D 7866 6516 101 101 1.28% 1.55%

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 85094 457.31 938 923 184.1
A 8 255 9314 45.59 938 923 184.1
A 13 254 9251 45.24 938 923 184.1
B 0 229 184809 1073.2 912 894 171.4
B 10 245 31330 177.6 912 894 171.4
B 12 111 19676 109.6 912 894 171.4
C 14 238 146310 725.02 877 885 200.6
C 3 233 10087 45.88 877 885 200.6
C 2 16 6705 29.02 877 885 200.6
D 1 52 436543 2018.31 900 882 215.9
D 7 223 177163 816.67 900 882 215.9
D 2 234 24622 109.98 900 882 215.9

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