ASTROSAT CZTI

Data Quality Report

Orbit 31788

Creation date: 2024-06-27T20:32:45.660017
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/AS1T04_041T01_9000004642_31788cztM0_level2.evt modeM0/AS1T04_041T01_9000004642_31788cztM0_level2_quad_clean.evt
Size (bytes)317,525,76058,910,400
Size302.8 MB 56.2 MB
Events in quadrant A2,169,794395,155
Events in quadrant B2,851,597396,998
Events in quadrant C2,164,930371,176
Events in quadrant D2,190,834372,060

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087211
B0107991
C086781
D089071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34991765.030009%
B34991835.230066%
C34992346.687625%
D34991083.086596%

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 4819 3500 21 21 0.44% 0.60%
B 4819 3500 0 0 0.00% 0.00%
C 4819 3500 56 56 1.16% 1.60%
D 4819 3500 17 17 0.35% 0.49%

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 13 277431 2877.37 486 477 96.3
A 8 255 9333 92.01 486 477 96.3
A 13 6 8887 87.37 486 477 96.3
B 6 159 931713 10294.47 477 467 90.5
B 10 245 30878 336.18 477 467 90.5
B 12 111 10824 114.49 477 467 90.5
C 0 10 276629 2574.35 457 462 107.3
C 14 238 74331 688.58 457 462 107.3
C 4 175 12465 111.89 457 462 107.3
D 8 195 239562 2135.24 474 463 112.0
D 12 227 73906 655.87 474 463 112.0
D 2 250 40717 359.48 474 463 112.0

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