ASTROSAT CZTI

Data Quality Report

Orbit 12219

Creation date: 2024-06-27T16:23:58.216831
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/AS1C03_014T01_9000001804_12219cztM0_level2.evt modeM0/AS1C03_014T01_9000001804_12219cztM0_level2_quad_clean.evt
Size (bytes)611,988,480128,799,360
Size583.6 MB 122.8 MB
Events in quadrant A4,321,300877,842
Events in quadrant B5,711,291837,503
Events in quadrant C4,199,985859,062
Events in quadrant D3,825,614836,652

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175473
B0216822
C0174102
D0162872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70321061.507395%
B703272310.281570%
C70322563.640501%
D70321161.649602%

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 7709 7034 12 12 0.16% 0.17%
B 7709 7034 409 409 5.31% 5.81%
C 7709 7034 215 215 2.79% 3.06%
D 7709 7034 85 85 1.10% 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 1 162 237026 1420.79 816 797 166.3
A 8 15 232686 1394.69 816 797 166.3
A 13 251 187059 1120.27 816 797 166.3
B 4 239 1380063 9406.84 784 766 146.6
B 15 204 685512 4669.99 784 766 146.6
B 10 16 262775 1786.91 784 766 146.6
C 15 208 1117656 6233.06 777 780 179.2
C 4 175 36361 198.57 777 780 179.2
C 13 61 5731 27.63 777 780 179.2
D 10 199 206251 1094.55 781 756 187.7
D 1 52 147140 779.7 781 756 187.7
D 14 34 108124 571.89 781 756 187.7

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