ASTROSAT CZTI

Data Quality Report

Orbit 12861

Creation date: 2024-06-27T16:33:14.995156
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/AS1A04_048T01_9000001890_12861cztM0_level2.evt modeM0/AS1A04_048T01_9000001890_12861cztM0_level2_quad_clean.evt
Size (bytes)1,056,654,720164,920,320
Size1007.7 MB 157.3 MB
Events in quadrant A6,917,1371,021,508
Events in quadrant B10,944,281987,153
Events in quadrant C6,358,2151,032,401
Events in quadrant D6,832,646984,854

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02860
B02860
C02860
D02860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299674
B0420023
C0285223
D0302733

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140271901.354531%
B14027164511.727383%
C14027350.249519%
D140271080.769944%

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 15428 14031 81 81 0.53% 0.58%
B 15428 14031 1020 1020 6.61% 7.27%
C 15428 14031 0 0 0.00% 0.00%
D 15428 14031 43 43 0.28% 0.31%

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 15 222 283768 840.89 1656 1617 335.5
A 12 189 235859 698.11 1656 1617 335.5
A 9 143 15841 42.39 1656 1617 335.5
B 4 239 2471914 8158.42 1592 1552 302.8
B 0 85 1315828 4340.42 1592 1552 302.8
B 0 228 373628 1228.79 1592 1552 302.8
C 13 61 11929 27.31 1630 1635 376.9
C 3 202 4026 6.34 1630 1635 376.9
C 14 234 3993 6.26 1630 1635 376.9
D 4 95 471322 1198.73 1617 1568 391.9
D 1 52 151405 382.36 1617 1568 391.9
D 8 195 66087 164.64 1617 1568 391.9

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