ASTROSAT CZTI

Data Quality Report

Orbit 16588

Creation date: 2024-06-27T17:24:45.753572
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/AS1C04_001T01_9000002446_16588cztM0_level2.evt modeM0/AS1C04_001T01_9000002446_16588cztM0_level2_quad_clean.evt
Size (bytes)453,916,800128,522,880
Size432.9 MB 122.6 MB
Events in quadrant A2,966,272874,331
Events in quadrant B3,424,582885,739
Events in quadrant C3,341,608865,834
Events in quadrant D3,594,739835,491

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129303
B0141732
C0140882
D0147482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6185330.533549%
B6185751.212611%
C6185781.261116%
D6185871.406629%

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 7522 6188 4 4 0.05% 0.06%
B 7522 6188 16 16 0.21% 0.26%
C 7522 6188 0 0 0.00% 0.00%
D 7522 6188 41 41 0.55% 0.66%

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 9 143 29170 185.74 761 747 153.0
A 0 226 6668 38.69 761 747 153.0
A 12 194 5660 32.1 761 747 153.0
B 15 35 78217 551.69 766 750 140.4
B 10 16 73997 521.64 766 750 140.4
B 0 85 72829 513.32 766 750 140.4
C 3 233 275946 1587.22 749 755 173.4
C 14 238 117437 672.99 749 755 173.4
C 8 128 10613 56.86 749 755 173.4
D 5 222 532206 2953.99 751 732 179.9
D 1 52 86010 473.98 751 732 179.9
D 10 70 83808 461.74 751 732 179.9

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