ASTROSAT CZTI

Data Quality Report

Orbit 25687

Creation date: 2024-06-27T19:20:24.656936
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/AS1A09_043T01_9000003744_25687cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25687cztM0_level2_quad_clean.evt
Size (bytes)526,777,92096,048,000
Size502.4 MB 91.6 MB
Events in quadrant A3,211,750633,779
Events in quadrant B3,285,230633,988
Events in quadrant C3,200,220599,810
Events in quadrant D5,805,704577,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137650
B0138660
C0137530
D0220320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6649460.691833%
B6650470.706767%
C6650711.067669%
D66492754.135960%

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 7554 6649 1 1 0.01% 0.02%
B 7555 6650 1 1 0.01% 0.02%
C 7555 6650 0 0 0.00% 0.00%
D 7554 6649 213 213 2.82% 3.20%

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 0 13 10375 56.99 830 813 167.8
A 13 254 9293 50.54 830 813 167.8
A 3 137 7714 41.13 830 813 167.8
B 0 245 61724 384.51 818 799 158.4
B 12 111 19350 117.08 818 799 158.4
B 11 111 17363 104.54 818 799 158.4
C 14 238 124585 675.55 783 786 183.3
C 3 233 26041 137.81 783 786 183.3
C 13 61 5508 25.77 783 786 183.3
D 1 52 1933230 10061.14 792 770 192.1
D 8 195 350119 1818.85 792 770 192.1
D 2 244 324798 1687.02 792 770 192.1

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