ASTROSAT CZTI

Data Quality Report

Orbit 02436

Creation date: 2024-06-27T14:17:44.611682
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/AS1T01_042T01_9000000366_02436cztM0_level2.evt modeM0/AS1T01_042T01_9000000366_02436cztM0_level2_quad_clean.evt
Size (bytes)518,351,04078,186,240
Size494.3 MB 74.6 MB
Events in quadrant A3,876,645462,155
Events in quadrant B3,817,538468,267
Events in quadrant C3,810,016453,815
Events in quadrant D3,663,653440,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168831
B0166800
C0168480
D0166760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78022052.627531%
B78021602.050756%
C7802921.179185%
D7802891.140733%

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 7803 7803 33 33 0.42% 0.42%
B 7803 7803 4 4 0.05% 0.05%
C 7803 7803 29 29 0.37% 0.37%
D 7803 7803 26 26 0.33% 0.33%

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 15 236 208833 1068.31 939 914 194.6
A 3 1 25864 128.2 939 914 194.6
A 8 15 21568 106.12 939 914 194.6
B 4 200 87896 467.01 950 925 186.2
B 15 85 49035 258.34 950 925 186.2
B 12 111 12455 61.91 950 925 186.2
C 2 53 149303 689.78 909 911 215.1
C 14 223 64851 297.22 909 911 215.1
C 10 65 32484 146.76 909 911 215.1
D 13 53 109911 497.54 907 883 219.1
D 5 172 27395 120.99 907 883 219.1
D 12 109 22059 96.64 907 883 219.1

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