ASTROSAT CZTI

Data Quality Report

Orbit 12138

Creation date: 2024-06-27T16:22:55.389075
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/AS1G08_065T01_9000001796_12138cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12138cztM0_level2_quad_clean.evt
Size (bytes)677,442,24085,003,200
Size646.1 MB 81.1 MB
Events in quadrant A8,676,765468,409
Events in quadrant B4,778,639551,754
Events in quadrant C2,868,554563,467
Events in quadrant D3,757,127541,100

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300312
B0183891
C0131111
D0155141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6428249938.876789%
B64284216.549471%
C6428370.575607%
D64281602.489110%

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 7314 6429 2164 2164 29.59% 33.66%
B 7314 6429 226 226 3.09% 3.52%
C 7314 6430 6 6 0.08% 0.09%
D 7314 6429 135 135 1.85% 2.10%

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 14 63 5930415 47704.39 611 599 124.3
A 1 162 142180 1139.0 611 599 124.3
A 1 178 58876 468.83 611 599 124.3
B 4 239 1167735 8336.84 732 715 140.0
B 0 85 248262 1768.4 732 715 140.0
B 3 64 213365 1519.11 732 715 140.0
C 15 208 53611 317.78 719 721 166.4
C 13 61 5155 26.64 719 721 166.4
C 13 250 4456 22.44 719 721 166.4
D 1 52 697532 4044.17 716 696 172.3
D 2 33 153063 884.28 716 696 172.3
D 8 195 84453 486.09 716 696 172.3

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