ASTROSAT CZTI

Data Quality Report

Orbit 20231123_A13_038T01_9000005944_level2

Creation date: 2023-11-29T11:41:08.744152
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/AS1A13_038T01_9000005944cztM0_level2.fits modeM0/AS1A13_038T01_9000005944cztM0_level2_quad_clean.evt
Size (bytes)368,648,640378,570,240
Size351.6 MB 361.0 MB
Events in quadrant A1,053,642729,827
Events in quadrant B2,405,3142,725,381
Events in quadrant C2,511,7042,609,465
Events in quadrant D2,046,0322,270,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09300
B09300
C09300
D09300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980390
B01088690
C0958150
D01439420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A455673577278.504181%
B4556817113.754828%
C455672820.618869%
D4556634677.608743%

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 53928 39965 0 0 0.00% 0.00%
B 53928 45567 0 0 0.00% 0.00%
C 53928 45569 0 0 0.00% 0.00%
D 53928 45524 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 7 110 889 8.78 275 258 71.9
A 0 29 856 8.32 275 258 71.9
A 14 95 823 7.86 275 258 71.9
B 2 9 2145 12.01 637 605 128.3
B 3 17 1785 9.2 637 605 128.3
B 2 8 1737 8.83 637 605 128.3
C 1 81 1934 7.74 664 620 169.8
C 3 202 1903 7.56 664 620 169.8
C 1 80 1882 7.43 664 620 169.8
D 6 79 1583 6.31 589 534 166.2
D 3 14 1509 5.87 589 534 166.2
D 10 189 1502 5.82 589 534 166.2

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