ASTROSAT CZTI

Data Quality Report

Orbit 24187

Creation date: 2024-06-27T19:03:13.763553
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/AS1A07_067T01_9000003578_24187cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24187cztM0_level2_quad_clean.evt
Size (bytes)591,474,240103,222,080
Size564.1 MB 98.4 MB
Events in quadrant A3,312,675692,114
Events in quadrant B3,343,802707,797
Events in quadrant C3,554,604662,123
Events in quadrant D7,270,805619,930

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134081
B0135271
C0142771
D0259321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6366350.549796%
B6367520.816711%
C63671001.570598%
D6367138521.752788%

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 7731 6367 0 0 0.00% 0.00%
B 7732 6368 0 0 0.00% 0.00%
C 7732 6368 27 27 0.35% 0.42%
D 7732 6367 1111 1111 14.37% 17.45%

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 9940 53.76 860 846 169.2
A 0 226 7386 38.66 860 846 169.2
A 3 137 6822 35.33 860 846 169.2
B 12 111 18313 110.36 850 833 158.4
B 11 111 16258 97.38 850 833 158.4
B 14 111 14361 85.41 850 833 158.4
C 2 16 263206 1420.72 806 811 184.7
C 14 238 132364 712.28 806 811 184.7
C 7 247 17644 91.14 806 811 184.7
D 7 238 3978648 21353.61 767 746 186.3
D 12 233 168001 897.83 767 746 186.3
D 8 195 124009 661.68 767 746 186.3

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