ASTROSAT CZTI

Data Quality Report

Orbit 43749

Creation date: 2024-06-27T22:55:18.939196
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/AS1A13_026T01_9000005904_43749cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43749cztM0_level2_quad_clean.evt
Size (bytes)556,729,920104,256,000
Size530.9 MB 99.4 MB
Events in quadrant A4,715,889726,374
Events in quadrant B3,809,246741,820
Events in quadrant C4,303,607714,378
Events in quadrant D7,324,764563,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186652
B0151581
C0165131
D0259261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58722674.547003%
B58732664.529201%
C58732233.797037%
D5873117419.989784%

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 7082 5873 105 105 1.48% 1.79%
B 7083 5874 123 123 1.74% 2.09%
C 7083 5874 174 174 2.46% 2.96%
D 7083 5873 906 906 12.79% 15.43%

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 10 83 864423 5791.02 730 716 149.1
A 13 248 289834 1938.49 730 716 149.1
A 7 3 249144 1665.67 730 716 149.1
B 5 235 496524 3524.25 718 700 140.7
B 0 200 211160 1495.92 718 700 140.7
B 4 80 78713 554.51 718 700 140.7
C 15 158 967072 5910.04 700 703 163.5
C 14 96 155222 944.99 700 703 163.5
C 15 157 108856 661.43 700 703 163.5
D 15 0 1343951 7783.06 662 643 172.6
D 1 52 1164780 6744.96 662 643 172.6
D 5 235 592579 3429.65 662 643 172.6

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