ASTROSAT CZTI

Data Quality Report

Orbit 20191026_A07_027T02_9000003258_level2

Creation date: 2019-10-30T14:45:35.714237
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_027T02_9000003258cztM0_level2_bc.evt modeM0/AS1A07_027T02_9000003258cztM0_level2_quad_clean.evt
Size (bytes)396,270,720174,101,760
Size377.9 MB 166.0 MB
Events in quadrant A2,476,3961,173,163
Events in quadrant B2,753,6361,182,364
Events in quadrant C2,653,0591,110,784
Events in quadrant D3,419,5501,103,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222850
B0231940
C0235130
D0254730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A101451241.222277%
B101451881.853130%
C101453363.311976%
D101452892.848694%

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 12695 10143 0 0 0.00% 0.00%
B 12695 10144 13 13 0.10% 0.13%
C 12695 10143 11 11 0.09% 0.11%
D 12695 10143 26 26 0.20% 0.26%

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 14361 100.86 641 633 136.1
A 3 1 6983 46.65 641 633 136.1
A 0 226 4153 25.86 641 633 136.1
B 3 64 132455 1091.28 645 633 120.8
B 4 171 74311 609.94 645 633 120.8
B 0 197 31913 258.95 645 633 120.8
C 10 22 325003 2318.2 603 602 139.9
C 8 208 7046 46.05 603 602 139.9
C 4 175 3661 21.86 603 602 139.9
D 11 176 522561 3657.34 622 601 142.7
D 1 52 202943 1417.8 622 601 142.7
D 7 238 146057 1019.2 622 601 142.7

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