ASTROSAT CZTI

Data Quality Report

Orbit 45971

Creation date: 2024-06-27T23:18:20.926213
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_017T01_9000006148_45971cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45971cztM0_level2_quad_clean.evt
Size (bytes)656,625,600111,896,640
Size626.2 MB 106.7 MB
Events in quadrant A6,102,230771,251
Events in quadrant B7,986,852702,879
Events in quadrant C4,389,338702,817
Events in quadrant D5,258,238698,927

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229240
B0289160
C0186620
D0207132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73591241.685012%
B7360114715.584239%
C73605958.084239%
D7359971.318114%

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 7359 7359 31 31 0.42% 0.42%
B 7360 7360 859 859 11.67% 11.67%
C 7360 7360 489 489 6.64% 6.64%
D 7359 7359 71 71 0.96% 0.96%

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 10 83 2764006 16230.53 812 793 170.2
A 7 3 91482 532.69 812 793 170.2
A 15 223 91261 531.39 812 793 170.2
B 3 112 4902769 32053.07 768 742 152.9
B 12 111 19844 124.9 768 742 152.9
B 11 111 18210 114.22 768 742 152.9
C 5 250 1190730 6636.96 763 766 179.3
C 12 250 133255 738.95 763 766 179.3
C 14 254 54082 297.37 763 766 179.3
D 11 241 1623999 8160.28 792 766 198.9
D 13 249 220877 1106.54 792 766 198.9
D 12 2 147932 739.83 792 766 198.9

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