ASTROSAT CZTI

Data Quality Report

Orbit 15445

Creation date: 2024-06-27T17:08:44.754813
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_033T01_9000002278_15445cztM0_level2.evt modeM0/AS1G08_033T01_9000002278_15445cztM0_level2_quad_clean.evt
Size (bytes)578,344,320110,554,560
Size551.6 MB 105.4 MB
Events in quadrant A3,757,757748,109
Events in quadrant B3,355,121759,419
Events in quadrant C3,345,577742,863
Events in quadrant D6,626,779654,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153012
B0139601
C0136591
D0238171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63422083.279722%
B6342841.324503%
C6342480.756859%
D6342120819.047619%

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 7593 6344 75 75 0.99% 1.18%
B 7593 6344 8 8 0.11% 0.13%
C 7593 6344 0 0 0.00% 0.00%
D 7593 6344 1049 1049 13.82% 16.54%

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 14 238 316893 1971.54 802 787 160.3
A 13 248 143287 888.77 802 787 160.3
A 14 237 112387 696.04 802 787 160.3
B 4 142 59329 392.83 800 783 149.0
B 0 189 58199 385.25 800 783 149.0
B 3 209 24801 161.15 800 783 149.0
C 3 233 346284 1982.14 766 770 174.3
C 7 247 7663 39.54 766 770 174.3
C 10 22 6286 31.64 766 770 174.3
D 1 52 3133975 17494.29 732 710 179.1
D 5 222 356015 1983.81 732 710 179.1
D 2 33 137055 761.27 732 710 179.1

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