ASTROSAT CZTI

Data Quality Report

Orbit 21407

Creation date: 2024-06-27T18:27:27.835377
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/AS1T03_140T01_9000003160_21407cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21407cztM0_level2_quad_clean.evt
Size (bytes)685,745,28095,137,920
Size654.0 MB 90.7 MB
Events in quadrant A3,643,970657,484
Events in quadrant B3,571,389655,329
Events in quadrant C4,700,199616,704
Events in quadrant D8,450,765535,488

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151561
B0144911
C0181851
D0294141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5951761.277096%
B59511813.041506%
C59525198.719758%
D5952159226.747312%

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 7251 5951 0 0 0.00% 0.00%
B 7251 5951 95 95 1.31% 1.60%
C 7252 5952 356 356 4.91% 5.98%
D 7252 5952 1562 1562 21.54% 26.24%

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 5 168 366773 2212.21 839 826 165.4
A 15 174 27363 160.42 839 826 165.4
A 11 47 19066 110.26 839 826 165.4
B 6 36 278972 1843.67 817 801 150.9
B 0 230 34295 221.99 817 801 150.9
B 0 190 25740 165.29 817 801 150.9
C 3 233 1528424 8537.7 779 787 178.9
C 14 238 125679 698.0 779 787 178.9
C 0 236 7648 38.34 779 787 178.9
D 12 235 4752070 26603.34 743 725 178.6
D 1 52 621607 3476.39 743 725 178.6
D 7 38 109414 608.56 743 725 178.6

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