ASTROSAT CZTI

Data Quality Report

Orbit 20201019_A09_038T11_9000003924_level2

Creation date: 2021-01-07T17:35:11.108652
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A09_038T11_9000003924cztM0_level2_bc.evt modeM0/AS1A09_038T11_9000003924cztM0_level2_quad_clean.evt
Size (bytes)407,681,280142,007,040
Size388.8 MB 135.4 MB
Events in quadrant A1,641,0341,026,003
Events in quadrant B1,714,7821,048,530
Events in quadrant C3,670,390796,860
Events in quadrant D4,841,181945,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146540
B0147770
C0277790
D0247170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6932530.764570%
B6932520.750144%
C6932207429.919215%
D6932100614.512406%

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 8102 6931 2 2 0.02% 0.03%
B 8102 6931 2 2 0.02% 0.03%
C 8101 6919 178 178 2.20% 2.57%
D 8102 6932 634 634 7.83% 9.15%

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 13 248 28194 310.88 415 410 89.4
A 13 254 11893 128.49 415 410 89.4
A 8 192 5570 57.74 415 410 89.4
B 0 190 26135 318.66 419 414 80.7
B 5 172 23609 287.37 419 414 80.7
B 15 32 18524 224.37 419 414 80.7
C 2 16 2383281 30767.05 321 322 77.5
C 15 208 48662 624.13 321 322 77.5
C 4 224 1964 21.2 321 322 77.5
D 1 52 3087745 32152.14 392 384 96.0
D 2 250 176696 1836.13 392 384 96.0
D 2 120 33900 349.04 392 384 96.0

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