ASTROSAT CZTI

Data Quality Report

Orbit 47611

Creation date: 2024-07-18T05:07:04.999427
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_071T01_9000006340_47611cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47611cztM0_level2_quad_clean.evt
Size (bytes)604,483,200126,823,680
Size576.5 MB 120.9 MB
Events in quadrant A8,705,605834,224
Events in quadrant B4,346,492869,897
Events in quadrant C4,134,712812,705
Events in quadrant D4,566,174763,818

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317811
B0185020
C0183820
D0193400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80414495.583883%
B80421521.890077%
C80422102.611291%
D80421521.890077%

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 8041 8041 155 155 1.93% 1.93%
B 8042 8042 55 55 0.68% 0.68%
C 8042 8042 188 188 2.34% 2.34%
D 8042 8042 93 93 1.16% 1.16%

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 4137469 22171.46 898 878 186.6
A 9 191 652811 3494.26 898 878 186.6
A 13 248 391799 2095.27 898 878 186.6
B 0 200 364783 2014.25 903 874 180.7
B 12 48 249570 1376.54 903 874 180.7
B 5 32 73170 400.16 903 874 180.7
C 3 233 623349 2998.95 880 882 207.6
C 14 254 60682 288.11 880 882 207.6
C 0 207 19689 90.61 880 882 207.6
D 2 249 238961 1076.7 882 854 221.1
D 2 165 231019 1040.79 882 854 221.1
D 2 120 187488 843.94 882 854 221.1

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