ASTROSAT CZTI

Data Quality Report

Orbit 23096

Creation date: 2024-06-27T18:49:42.490182
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/AS1A07_049T01_9000003408_23096cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23096cztM0_level2_quad_clean.evt
Size (bytes)584,786,88084,205,440
Size557.7 MB 80.3 MB
Events in quadrant A4,042,181533,125
Events in quadrant B2,995,573556,004
Events in quadrant C3,183,573528,950
Events in quadrant D7,055,251485,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163361
B0131121
C0136341
D0253371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63952734.268960%
B6396510.797373%
C63961041.626016%
D6396142822.326454%

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 7310 6396 155 155 2.12% 2.42%
B 7311 6397 3 3 0.04% 0.05%
C 7311 6397 29 29 0.40% 0.45%
D 7310 6396 1343 1343 18.37% 21.00%

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 6 16 1168892 7729.59 745 729 151.1
A 13 254 8849 53.73 745 729 151.1
A 3 137 6584 38.74 745 729 151.1
B 12 111 18119 119.28 754 735 145.7
B 11 111 15952 104.42 754 735 145.7
B 4 216 15429 100.83 754 735 145.7
C 0 10 191845 1117.91 727 733 171.0
C 14 238 114768 667.05 727 733 171.0
C 0 207 28641 163.25 727 733 171.0
D 7 238 3560766 20704.43 702 680 171.9
D 12 233 316516 1836.81 702 680 171.9
D 1 52 263447 1528.18 702 680 171.9

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