ASTROSAT CZTI

Data Quality Report

Orbit 28669

Creation date: 2024-06-27T19:54:42.683875
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_110T03_9000004114_28669cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28669cztM0_level2_quad_clean.evt
Size (bytes)1,127,352,960153,904,320
Size1.0 GB 146.8 MB
Events in quadrant A6,565,014953,377
Events in quadrant B8,293,439967,221
Events in quadrant C6,669,785925,776
Events in quadrant D11,674,632853,995

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285552
B0337122
C0286892
D0445042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13900950.683453%
B139005724.115108%
C139002141.539568%
D1390010237.359712%

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 15114 13899 0 0 0.00% 0.00%
B 15114 13899 138 138 0.91% 0.99%
C 15114 13899 0 0 0.00% 0.00%
D 15114 13899 836 836 5.53% 6.01%

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 23698 64.36 1696 1654 342.5
A 3 137 16972 44.72 1696 1654 342.5
A 15 174 16431 43.14 1696 1654 342.5
B 10 245 1307881 4081.01 1663 1622 320.1
B 15 33 405671 1262.33 1663 1622 320.1
B 12 111 40115 120.26 1663 1622 320.1
C 14 238 287846 755.11 1616 1626 379.0
C 14 254 44401 112.85 1616 1626 379.0
C 3 233 17513 41.91 1616 1626 379.0
D 1 52 4037074 10547.13 1587 1544 382.6
D 8 195 1432248 3739.24 1587 1544 382.6
D 2 234 58511 148.89 1587 1544 382.6

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