ASTROSAT CZTI

Data Quality Report

Orbit 23526

Creation date: 2024-06-27T18:55:43.874843
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_011T01_9000003482_23526cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23526cztM0_level2_quad_clean.evt
Size (bytes)557,795,52092,779,200
Size532.0 MB 88.5 MB
Events in quadrant A3,604,100581,439
Events in quadrant B4,194,156586,366
Events in quadrant C3,639,595563,673
Events in quadrant D4,937,954548,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156663
B0173023
C0157023
D0196903

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7611991.300749%
B76111582.075943%
C76121361.786653%
D76124966.516027%

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 7861 7612 4 4 0.05% 0.05%
B 7861 7612 18 18 0.23% 0.24%
C 7862 7613 0 0 0.00% 0.00%
D 7862 7613 387 387 4.92% 5.08%

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 10 253 16933 85.81 927 906 186.8
A 13 254 13885 69.49 927 906 186.8
A 3 137 8223 39.17 927 906 186.8
B 0 189 364048 2071.48 915 889 175.3
B 0 230 64504 362.86 915 889 175.3
B 15 33 45691 255.55 915 889 175.3
C 14 238 138930 675.42 879 883 204.4
C 7 247 32700 155.67 879 883 204.4
C 2 16 16222 75.05 879 883 204.4
D 1 52 775009 3600.57 881 855 215.0
D 12 233 662373 3076.7 881 855 215.0
D 7 238 83226 383.11 881 855 215.0

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