ASTROSAT CZTI

Data Quality Report

Orbit 48218

Creation date: 2024-08-28T03:57:49.086027
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/AS1C09_004T05_9000006416_48218cztM0_level2.fits modeM0/AS1C09_004T05_9000006416_48218cztM0_level2_quad_clean.evt
Size (bytes)596,177,280113,581,440
Size568.6 MB 108.3 MB
Events in quadrant A7,802,414756,049
Events in quadrant B5,591,816756,041
Events in quadrant C3,145,399743,656
Events in quadrant D4,977,897686,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279761
B0215071
C0148801
D0200051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71242864.014599%
B71253575.010526%
C7125330.463158%
D71251442.021053%

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 7449 7125 13 13 0.17% 0.18%
B 7450 7127 152 152 2.04% 2.13%
C 7450 7127 6 6 0.08% 0.08%
D 7450 7127 85 85 1.14% 1.19%

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 4676084 29452.54 759 743 158.7
A 0 31 78292 488.52 759 743 158.7
A 13 248 45995 285.07 759 743 158.7
B 10 7 1232366 8325.42 753 729 147.9
B 0 200 559550 3777.43 753 729 147.9
B 4 21 375930 2536.22 753 729 147.9
C 12 2 99374 553.57 762 764 178.1
C 14 254 34438 189.04 762 764 178.1
C 3 233 10763 56.13 762 764 178.1
D 2 165 1253768 6580.92 757 731 190.4
D 4 222 175601 918.41 757 731 190.4
D 2 249 172518 902.22 757 731 190.4

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