ASTROSAT CZTI

Data Quality Report

Orbit 12633

Creation date: 2024-06-27T16:30:16.136728
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/AS1G08_071T01_9000001874_12633cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12633cztM0_level2_quad_clean.evt
Size (bytes)567,267,84071,245,440
Size541.0 MB 67.9 MB
Events in quadrant A3,127,079432,412
Events in quadrant B4,910,975425,911
Events in quadrant C3,331,412437,396
Events in quadrant D5,375,401413,661

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136403
B0190642
C0142692
D0204192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420871.355140%
B64204326.728972%
C6420971.510903%
D64204887.601246%

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 8586 6421 0 0 0.00% 0.00%
B 8585 6420 216 216 2.52% 3.36%
C 8586 6421 24 24 0.28% 0.37%
D 8586 6421 277 277 3.23% 4.31%

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 8 192 7548 41.26 809 793 163.7
A 0 226 7238 39.36 809 793 163.7
A 8 15 6516 34.95 809 793 163.7
B 4 239 923970 6159.08 794 776 149.9
B 4 206 564240 3759.15 794 776 149.9
B 4 81 101766 673.75 794 776 149.9
C 15 208 210081 1148.99 793 797 182.1
C 14 234 23752 126.02 793 797 182.1
C 13 61 5817 27.56 793 797 182.1
D 1 52 1653211 8996.51 767 747 183.7
D 10 157 610137 3317.7 767 747 183.7
D 2 14 124976 676.34 767 747 183.7

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