ASTROSAT CZTI

Data Quality Report

Orbit 23664

Creation date: 2024-06-27T18:57:21.223702
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/AS1A08_004T02_9000003496_23664cztM0_level2.evt modeM0/AS1A08_004T02_9000003496_23664cztM0_level2_quad_clean.evt
Size (bytes)469,169,280104,895,360
Size447.4 MB 100.0 MB
Events in quadrant A3,011,765698,054
Events in quadrant B3,518,431716,101
Events in quadrant C3,074,975684,045
Events in quadrant D4,180,106643,165

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129862
B0145072
C0130073
D0166692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242180.288369%
B6242530.849087%
C6241520.833200%
D62411582.531646%

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 7472 6243 0 0 0.00% 0.00%
B 7472 6242 12 12 0.16% 0.19%
C 7471 6242 0 0 0.00% 0.00%
D 7471 6242 146 146 1.95% 2.34%

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 13 254 11278 67.78 780 766 155.1
A 0 226 6718 38.38 780 766 155.1
A 3 137 6664 38.03 780 766 155.1
B 3 64 232975 1581.36 787 768 146.8
B 0 230 68387 460.49 787 768 146.8
B 0 229 47011 314.92 787 768 146.8
C 14 238 123383 704.95 752 758 173.9
C 7 247 21260 117.86 752 758 173.9
C 13 61 5244 25.79 752 758 173.9
D 1 52 582893 3239.77 742 721 179.7
D 9 85 469684 2609.76 742 721 179.7
D 12 233 110205 609.28 742 721 179.7

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