ASTROSAT CZTI

Data Quality Report

Orbit 36248

Creation date: 2022-06-13T13:41:47.536357
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_071T37_9000005180_36248cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36248cztM0_level2_quad_clean.evt
Size (bytes)438,678,72051,989,760
Size418.4 MB 49.6 MB
Events in quadrant A2,448,826320,913
Events in quadrant B3,229,822317,470
Events in quadrant C3,531,211304,595
Events in quadrant D3,745,080289,017

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101503
B0126672
C0135452
D0144202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486540.082220%
B48652314.748201%
C48652224.563207%
D48652605.344296%

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 6988 4866 0 0 0.00% 0.00%
B 6988 4866 166 166 2.38% 3.41%
C 6988 4866 200 200 2.86% 4.11%
D 6988 4866 265 265 3.79% 5.45%

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 10 83 165126 1389.76 588 578 118.4
A 13 254 8088 63.43 588 578 118.4
A 13 6 7227 56.16 588 578 118.4
B 5 236 466113 4203.59 579 566 110.7
B 5 172 348629 3142.79 579 566 110.7
B 8 128 59748 534.38 579 566 110.7
C 0 207 878624 6667.14 563 568 131.7
C 0 10 250383 1896.86 563 568 131.7
C 15 214 202372 1532.31 563 568 131.7
D 12 6 1059604 7783.28 552 537 136.1
D 13 171 141113 1033.12 552 537 136.1
D 10 118 117127 856.84 552 537 136.1

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