ASTROSAT CZTI

Data Quality Report

Orbit 45498

Creation date: 2024-06-27T23:12:55.020010
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_054T01_9000006098_45498cztM0_level2.fits modeM0/AS1A13_054T01_9000006098_45498cztM0_level2_quad_clean.evt
Size (bytes)453,320,640109,512,000
Size432.3 MB 104.4 MB
Events in quadrant A5,746,194723,758
Events in quadrant B3,280,901756,509
Events in quadrant C3,145,684714,264
Events in quadrant D4,077,016645,420

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215791
B0142931
C0142461
D0164071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68311722.517933%
B68311141.668863%
C6831931.361440%
D68311802.635046%

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 7651 6832 16 16 0.21% 0.23%
B 7651 6832 17 17 0.22% 0.25%
C 7651 6832 20 20 0.26% 0.29%
D 7651 6832 83 83 1.08% 1.21%

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 2714861 16959.25 772 754 160.0
A 2 79 42192 258.93 772 754 160.0
A 3 137 9004 51.55 772 754 160.0
B 10 14 54157 346.31 770 748 154.2
B 5 172 52450 335.24 770 748 154.2
B 15 35 32182 203.82 770 748 154.2
C 14 254 150983 840.63 757 759 178.7
C 3 233 30274 165.16 757 759 178.7
C 1 3 7481 37.62 757 759 178.7
D 11 241 403855 2119.79 753 728 190.2
D 2 249 191238 1001.77 753 728 190.2
D 1 52 169865 889.39 753 728 190.2

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