ASTROSAT CZTI

Data Quality Report

Orbit 18669

Creation date: 2024-06-27T17:53:11.679668
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/AS1A06_005T01_9000002788_18669cztM0_level2.evt modeM0/AS1A06_005T01_9000002788_18669cztM0_level2_quad_clean.evt
Size (bytes)500,143,68077,071,680
Size477.0 MB 73.5 MB
Events in quadrant A3,378,184476,847
Events in quadrant B3,499,025483,612
Events in quadrant C3,421,483466,044
Events in quadrant D4,389,411436,126

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143892
B0146582
C0146092
D0175002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67591101.627460%
B67601251.849112%
C67601482.189349%
D67603655.399408%

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 8824 6759 0 0 0.00% 0.00%
B 8825 6760 1 1 0.01% 0.01%
C 8825 6760 0 0 0.00% 0.00%
D 8825 6760 263 263 2.98% 3.89%

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 15 192 14940 81.33 869 849 173.3
A 13 254 10783 57.34 869 849 173.3
A 11 29 9426 49.5 869 849 173.3
B 10 245 27327 162.01 865 844 163.5
B 3 64 22094 129.99 865 844 163.5
B 12 111 19513 114.21 865 844 163.5
C 14 238 130061 665.4 834 840 194.2
C 3 233 21985 108.88 834 840 194.2
C 9 54 18362 90.22 834 840 194.2
D 7 238 906560 4503.89 830 807 201.1
D 1 52 316931 1571.94 830 807 201.1
D 2 234 27301 131.74 830 807 201.1

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