ASTROSAT CZTI

Data Quality Report

Orbit 21886

Creation date: 2024-06-27T18:33:29.065598
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_041T01_9000003234_21886cztM0_level2.evt modeM0/AS1A07_041T01_9000003234_21886cztM0_level2_quad_clean.evt
Size (bytes)481,988,16099,478,080
Size459.7 MB 94.9 MB
Events in quadrant A3,161,600659,741
Events in quadrant B3,294,135677,877
Events in quadrant C3,240,576638,563
Events in quadrant D4,477,024600,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133592
B0136743
C0134062
D0175522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247440.704338%
B6246550.880564%
C6246741.184758%
D62462263.618316%

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 7602 6248 8 8 0.11% 0.13%
B 7601 6247 6 6 0.08% 0.10%
C 7601 6247 0 0 0.00% 0.00%
D 7601 6247 199 199 2.62% 3.19%

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 4 2 33340 200.36 804 788 162.5
A 5 16 22301 132.41 804 788 162.5
A 13 254 12041 69.26 804 788 162.5
B 0 197 26590 170.77 809 793 151.1
B 3 64 23961 153.36 809 793 151.1
B 15 33 21089 134.35 809 793 151.1
C 10 91 130412 738.09 761 768 175.6
C 14 238 124660 705.34 761 768 175.6
C 0 10 9370 48.97 761 768 175.6
D 1 52 1149315 6251.29 755 731 183.7
D 7 238 286365 1554.59 755 731 183.7
D 13 174 76822 414.13 755 731 183.7

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