ASTROSAT CZTI

Data Quality Report

Orbit 45255

Creation date: 2024-06-27T23:11:32.171380
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_023T05_9000006062_45255cztM0_level2.fits modeM0/AS1A13_023T05_9000006062_45255cztM0_level2_quad_clean.evt
Size (bytes)494,726,400109,071,360
Size471.8 MB 104.0 MB
Events in quadrant A7,129,524672,600
Events in quadrant B3,013,369785,793
Events in quadrant C3,370,824739,329
Events in quadrant D4,305,206660,659

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257942
B0131702
C0142062
D0171582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A636883713.143844%
B6368200.314070%
C6368861.350503%
D63681772.779523%

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 7573 6368 674 674 8.90% 10.58%
B 7573 6369 4 4 0.05% 0.06%
C 7573 6369 71 71 0.94% 1.11%
D 7573 6369 153 153 2.02% 2.40%

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 2256607 15347.94 707 694 147.0
A 13 248 2145742 14593.68 707 694 147.0
A 3 137 7633 47.21 707 694 147.0
B 5 172 29778 199.73 747 723 145.5
B 12 111 18484 122.09 747 723 145.5
B 14 111 17070 112.37 747 723 145.5
C 14 254 351591 2026.11 735 740 173.2
C 1 3 100993 578.94 735 740 173.2
C 15 208 19002 105.46 735 740 173.2
D 11 241 750090 4129.89 721 701 181.5
D 13 249 210050 1153.73 721 701 181.5
D 5 222 191747 1052.86 721 701 181.5

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