ASTROSAT CZTI

Data Quality Report

Orbit 20231027_A13_008T01_9000005898_level2

Creation date: 2023-10-28T11:40:47.114260
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_008T01_9000005898cztM0_level2.fits modeM0/AS1A13_008T01_9000005898cztM0_level2_quad_clean.evt
Size (bytes)437,768,640412,968,960
Size417.5 MB 393.8 MB
Events in quadrant A2,390,1981,878,711
Events in quadrant B2,786,5962,892,238
Events in quadrant C2,159,5981,765,236
Events in quadrant D2,325,3762,395,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900
B0900
C0900
D0900

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010620
B010620
C010620
D010620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03172680
B01229710
C02802470
D01745610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A520622146041.220084%
B5206216253.121278%
C520362284943.909985%
D52062540210.376090%

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 61132 51975 0 0 0.00% 0.00%
B 61132 52061 0 0 0.00% 0.00%
C 61132 51846 0 0 0.00% 0.00%
D 61132 51916 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 1900 8.56 625 584 153.7
A 15 236 1878 8.42 625 584 153.7
A 0 29 1866 8.34 625 584 153.7
B 2 9 2431 11.77 738 704 146.7
B 5 232 1987 8.75 738 704 146.7
B 3 17 1936 8.4 738 704 146.7
C 3 202 1704 7.88 572 531 148.8
C 3 203 1696 7.83 572 531 148.8
C 1 81 1608 7.24 572 531 148.8
D 7 3 1802 6.4 676 613 185.7
D 6 67 1790 6.34 676 613 185.7
D 10 189 1732 6.02 676 613 185.7

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