ASTROSAT CZTI

Data Quality Report

Orbit 21056

Creation date: 2024-06-27T18:23:02.530131
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/AS1A05_025T04_9000003110_21056cztM0_level2.evt modeM0/AS1A05_025T04_9000003110_21056cztM0_level2_quad_clean.evt
Size (bytes)466,378,56069,992,640
Size444.8 MB 66.8 MB
Events in quadrant A3,125,895427,701
Events in quadrant B3,437,593432,862
Events in quadrant C3,133,842409,756
Events in quadrant D3,992,381402,507

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134892
B0143612
C0133682
D0161102

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6398510.797124%
B6397851.328748%
C6397681.062998%
D63971642.563702%

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 7483 6399 0 0 0.00% 0.00%
B 7482 6398 10 10 0.13% 0.16%
C 7482 6398 0 0 0.00% 0.00%
D 7482 6398 113 113 1.51% 1.77%

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 13 254 7815 43.61 810 796 161.0
A 0 226 7166 39.58 810 796 161.0
A 3 137 6328 34.37 810 796 161.0
B 7 220 72302 470.0 808 790 152.2
B 0 197 70188 456.1 808 790 152.2
B 0 230 41189 265.51 808 790 152.2
C 14 238 122543 677.98 770 775 179.6
C 13 61 5535 26.5 770 775 179.6
C 3 9 4985 23.44 770 775 179.6
D 1 52 761251 4069.52 771 748 186.9
D 12 233 78526 416.2 771 748 186.9
D 7 238 70534 373.43 771 748 186.9

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