ASTROSAT CZTI

Data Quality Report

Orbit 25710

Creation date: 2024-06-27T19:20:39.699707
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/AS1A09_008T06_9000003748_25710cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25710cztM0_level2_quad_clean.evt
Size (bytes)557,933,76096,891,840
Size532.1 MB 92.4 MB
Events in quadrant A3,292,047623,287
Events in quadrant B3,470,417642,109
Events in quadrant C3,353,949605,893
Events in quadrant D6,312,713582,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143320
B0148020
C0144020
D0235300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6896320.464037%
B6896590.855568%
C6896801.160093%
D6896103915.066705%

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 7696 6897 1 1 0.01% 0.01%
B 7696 6897 1 1 0.01% 0.01%
C 7696 6897 0 0 0.00% 0.00%
D 7696 6896 812 812 10.55% 11.77%

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 0 13 16168 89.58 849 835 171.2
A 13 254 9056 48.03 849 835 171.2
A 3 137 7912 41.35 849 835 171.2
B 3 112 52565 317.08 853 831 163.2
B 0 219 33187 198.31 853 831 163.2
B 12 111 20047 117.77 853 831 163.2
C 14 238 127737 659.54 816 821 192.4
C 3 233 40225 204.77 816 821 192.4
C 13 61 5411 23.85 816 821 192.4
D 1 52 2097033 11215.31 766 743 186.9
D 7 80 699041 3735.95 766 743 186.9
D 8 195 425966 2274.97 766 743 186.9

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