ASTROSAT CZTI

Data Quality Report

Orbit 20151023_P01_161T05_9000000058_level2

Creation date: 2025-01-05T00:26:22.922427
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/AS1P01_161T05_9000000058cztM0_level2.fits modeM0/AS1P01_161T05_9000000058cztM0_level2_quad_clean.evt
Size (bytes)258,174,720239,276,160
Size246.2 MB 228.2 MB
Events in quadrant A1,449,7801,304,026
Events in quadrant B1,460,9501,338,628
Events in quadrant C1,436,6921,270,857
Events in quadrant D1,187,3101,049,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06780
B06780
C06780
D06780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01455250
B01396610
C01454740
D01594780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332284521.360299%
B33228450.135428%
C332283801.143614%
D3322820736.238714%

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 50646 33225 0 0 0.00% 0.00%
B 50646 33227 0 0 0.00% 0.00%
C 50646 33225 0 0 0.00% 0.00%
D 50646 33215 0 0 0.00% 0.00%

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 7 110 1358 11.01 377 352 91.4
A 0 29 1326 10.66 377 352 91.4
A 0 30 1055 7.69 377 352 91.4
B 2 9 1221 12.15 386 366 70.4
B 14 254 1008 9.12 386 366 70.4
B 2 18 961 8.45 386 366 70.4
C 3 203 1180 8.67 379 350 95.7
C 3 202 1052 7.34 379 350 95.7
C 12 241 1033 7.14 379 350 95.7
D 6 44 903 7.02 340 311 84.4
D 6 114 894 6.91 340 311 84.4
D 11 82 887 6.83 340 311 84.4

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