ASTROSAT CZTI

Data Quality Report

Orbit 26969

Creation date: 2024-06-27T19:35:05.373121
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/AS1C05_019T03_9000003898_26969cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26969cztM0_level2_quad_clean.evt
Size (bytes)2,206,419,840292,469,760
Size2.1 GB 278.9 MB
Events in quadrant A30,215,5691,328,382
Events in quadrant B18,336,4202,094,589
Events in quadrant C7,880,1982,197,625
Events in quadrant D9,304,2292,117,594

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01008680
B0652580
C0337330
D0389350

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161531085667.207330%
B16153363522.503560%
C161532461.522937%
D161543962.451405%

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 19793 16153 9045 9045 45.70% 56.00%
B 19793 16155 2935 2935 14.83% 18.17%
C 19793 16156 11 11 0.06% 0.07%
D 19794 16157 231 231 1.17% 1.43%

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 14 235 21639454 87145.36 1268 1247 248.3
A 6 16 3316650 13352.4 1268 1247 248.3
A 0 13 332300 1333.28 1268 1247 248.3
B 0 189 10872938 32107.01 1857 1813 338.6
B 5 172 73674 212.24 1857 1813 338.6
B 0 230 57198 163.58 1857 1813 338.6
C 14 238 311733 711.16 1903 1916 435.6
C 15 208 90932 204.33 1903 1916 435.6
C 2 16 35042 76.04 1903 1916 435.6
D 1 52 1068748 2380.34 1902 1851 448.2
D 2 250 590395 1313.09 1902 1851 448.2
D 12 1 203865 450.71 1902 1851 448.2

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