ASTROSAT CZTI

Data Quality Report

Orbit 39655

Creation date: 2024-06-27T22:07:23.119914
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_018T01_9000005488_39655cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39655cztM0_level2_quad_clean.evt
Size (bytes)569,718,72097,223,040
Size543.3 MB 92.7 MB
Events in quadrant A4,716,519684,941
Events in quadrant B2,981,481700,790
Events in quadrant C8,811,911497,803
Events in quadrant D4,091,109620,724

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183653
B0135722
C0305472
D0169882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6294881.398157%
B6294701.112170%
C6294188829.996822%
D62941372.176676%

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 8950 6296 42 42 0.47% 0.67%
B 8950 6296 36 36 0.40% 0.57%
C 8950 6296 1621 1621 18.11% 25.75%
D 8950 6296 185 185 2.07% 2.94%

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 15 222 1525559 11054.82 675 661 137.9
A 10 83 492244 3563.76 675 661 137.9
A 6 10 35252 250.77 675 661 137.9
B 5 172 100945 776.17 672 654 129.2
B 4 67 98838 759.86 672 654 129.2
B 5 255 83544 641.5 672 654 129.2
C 15 208 5078266 37010.7 587 590 137.2
C 14 254 595356 4335.19 587 590 137.2
C 9 187 452912 3296.93 587 590 137.2
D 12 227 1172920 7263.81 659 639 161.4
D 12 233 142731 880.45 659 639 161.4
D 1 52 140200 864.76 659 639 161.4

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