ASTROSAT CZTI

Data Quality Report

Orbit 43637

Creation date: 2024-06-27T22:53:57.219694
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/AS1A12_068T05_9000005894_43637cztM0_level2.fits modeM0/AS1A12_068T05_9000005894_43637cztM0_level2_quad_clean.evt
Size (bytes)1,052,340,480103,754,880
Size1003.6 MB 98.9 MB
Events in quadrant A5,202,538794,271
Events in quadrant B6,701,846775,750
Events in quadrant C17,820,130399,407
Events in quadrant D8,671,232664,701

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204481
B0250731
C0579161
D0309112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72263254.497647%
B7227103214.279784%
C7227679494.008579%
D7226128717.810684%

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 7475 7226 184 184 2.46% 2.55%
B 7477 7227 518 518 6.93% 7.17%
C 7476 7226 6524 6524 87.27% 90.29%
D 7476 7226 915 915 12.24% 12.66%

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 15 223 908590 5449.12 807 789 166.6
A 10 83 809681 4855.42 807 789 166.6
A 15 222 140605 839.25 807 789 166.6
B 4 206 2482112 16628.11 772 750 149.2
B 5 235 738371 4942.95 772 750 149.2
B 0 200 96055 638.66 772 750 149.2
C 15 142 10642447 108954.36 415 417 97.7
C 3 233 2882609 29508.22 415 417 97.7
C 15 157 1564391 16012.15 415 417 97.7
D 13 249 514827 2599.73 757 731 197.7
D 4 212 513666 2593.86 757 731 197.7
D 4 221 511840 2584.63 757 731 197.7

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