ASTROSAT CZTI

Data Quality Report

Orbit 27342

Creation date: 2024-06-27T19:39:04.758248
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/AS1T03_255T01_9000003922_27342cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27342cztM0_level2_quad_clean.evt
Size (bytes)653,034,240105,865,920
Size622.8 MB 101.0 MB
Events in quadrant A3,517,883750,253
Events in quadrant B3,725,533745,653
Events in quadrant C6,626,960634,509
Events in quadrant D5,498,741654,273

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144590
B0151400
C0236420
D0204080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60311061.757586%
B60311742.885094%
C6031153325.418670%
D603199816.547836%

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 7326 6031 12 12 0.16% 0.20%
B 7326 6031 65 65 0.89% 1.08%
C 7326 6031 1020 1020 13.92% 16.91%
D 7326 6031 892 892 12.18% 14.79%

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 13 248 110874 635.6 877 864 173.1
A 14 235 24302 135.42 877 864 173.1
A 13 254 9439 49.54 877 864 173.1
B 5 172 243055 1512.27 853 835 160.2
B 7 205 95171 588.97 853 835 160.2
B 10 245 20219 121.02 853 835 160.2
C 2 16 2063419 12420.61 722 729 166.1
C 8 208 1593655 9591.9 722 729 166.1
C 14 238 118077 706.62 722 729 166.1
D 1 52 2441575 13397.17 758 743 182.2
D 2 250 138419 755.67 758 743 182.2
D 2 234 25938 138.29 758 743 182.2

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