ASTROSAT CZTI

Data Quality Report

Orbit 20777

Creation date: 2024-06-27T18:19:29.539388
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/AS1A05_013T01_9000003070_20777cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20777cztM0_level2_quad_clean.evt
Size (bytes)324,000,00058,737,600
Size309.0 MB 56.0 MB
Events in quadrant A1,838,578402,878
Events in quadrant B1,954,504401,845
Events in quadrant C1,873,822390,998
Events in quadrant D3,883,601311,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011638
B011638
C011840
D011842

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115593598
B0119773734
C0122944293
D0229128977

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3914180.459888%
B3907340.870233%
C3880270.695876%
D362885423.539140%

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 6252 4201 0 0 0.00% 0.00%
B 6271 4202 11 11 0.18% 0.26%
C 6234 4149 1 1 0.02% 0.02%
D 6236 3811 768 768 12.32% 20.15%

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 0 226 4144 37.62 478 467 97.7
A 3 137 3914 35.27 478 467 97.7
A 12 194 3463 30.66 478 467 97.7
B 3 64 39272 424.34 469 456 91.5
B 0 189 21788 233.2 469 456 91.5
B 7 220 18462 196.84 469 456 91.5
C 14 238 70246 661.07 448 451 105.6
C 9 54 54003 507.22 448 451 105.6
C 13 61 3168 25.73 448 451 105.6
D 1 20 1552338 16556.45 382 371 93.7
D 1 52 707855 7547.47 382 371 93.7
D 12 227 63675 675.33 382 371 93.7

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