ASTROSAT CZTI

Data Quality Report

Orbit 46726

Creation date: 2024-06-27T23:26:53.481793
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_092T09_9000006258_46726cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46726cztM0_level2_quad_clean.evt
Size (bytes)660,484,800126,472,320
Size629.9 MB 120.6 MB
Events in quadrant A7,667,832849,982
Events in quadrant B4,095,212884,228
Events in quadrant C3,682,693857,998
Events in quadrant D8,364,332663,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280552
B0178426
C0171010
D0307050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82481692.048982%
B8247630.763914%
C824980.096981%
D8249141317.129349%

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 8248 8248 74 74 0.90% 0.90%
B 8249 8248 6 6 0.07% 0.07%
C 8249 8249 12 12 0.15% 0.15%
D 8249 8249 1320 1320 16.00% 16.00%

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 3796921 19884.51 912 891 190.9
A 15 235 173085 901.99 912 891 190.9
A 14 235 118018 613.54 912 891 190.9
B 4 171 199634 1071.99 917 885 185.4
B 3 112 130175 697.35 917 885 185.4
B 0 198 59519 316.25 917 885 185.4
C 3 233 125408 582.91 902 905 213.6
C 14 254 12437 53.99 902 905 213.6
C 1 241 8061 33.5 902 905 213.6
D 1 52 4564915 21690.34 832 805 210.4
D 10 246 154695 731.34 832 805 210.4
D 13 249 141911 670.59 832 805 210.4

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