ASTROSAT CZTI

Data Quality Report

Orbit 27964

Creation date: 2024-06-27T19:46:30.368030
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/AS1A10_021T03_9000004038_27964cztM0_level2.evt modeM0/AS1A10_021T03_9000004038_27964cztM0_level2_quad_clean.evt
Size (bytes)569,813,760101,776,320
Size543.4 MB 97.1 MB
Events in quadrant A3,424,718678,666
Events in quadrant B4,349,621681,802
Events in quadrant C3,831,499659,639
Events in quadrant D5,229,572627,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137830
B0172950
C0152980
D0199830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6231741.187610%
B62321111.781130%
C62321562.503209%
D62323746.001284%

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 7506 6231 2 2 0.03% 0.03%
B 7507 6232 18 18 0.24% 0.29%
C 7507 6232 21 21 0.28% 0.34%
D 7506 6231 309 309 4.12% 4.96%

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 11017 57.66 886 873 175.9
A 8 192 9504 49.06 886 873 175.9
A 0 226 7815 39.46 886 873 175.9
B 10 245 928725 5747.14 864 844 161.5
B 12 111 19010 112.52 864 844 161.5
B 11 111 17326 102.09 864 844 161.5
C 15 208 259422 1328.47 845 855 194.6
C 14 238 137752 703.35 845 855 194.6
C 2 16 91435 465.38 845 855 194.6
D 1 52 827929 4172.86 840 820 198.2
D 7 80 722144 3639.17 840 820 198.2
D 8 195 161983 813.09 840 820 198.2

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