ASTROSAT CZTI

Data Quality Report

Orbit 46828

Creation date: 2024-06-27T23:28:11.822058
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/AS1C07_001T10_9000006272_46828cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46828cztM0_level2_quad_clean.evt
Size (bytes)554,569,920118,589,760
Size528.9 MB 113.1 MB
Events in quadrant A6,673,154777,777
Events in quadrant B5,304,883790,597
Events in quadrant C3,163,882791,324
Events in quadrant D4,805,189708,674

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247760
B0209850
C0151670
D0198440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7504420.559701%
B75041882.505330%
C750450.066631%
D75042222.958422%

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 7504 7504 2 2 0.03% 0.03%
B 7504 7504 73 73 0.97% 0.97%
C 7504 7504 4 4 0.05% 0.05%
D 7504 7504 177 177 2.36% 2.36%

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 3535751 21337.89 792 774 165.7
A 15 235 33648 198.43 792 774 165.7
A 9 191 18010 104.04 792 774 165.7
B 3 112 1781511 11554.29 789 764 154.1
B 4 171 85761 551.5 789 764 154.1
B 15 36 70465 452.25 789 764 154.1
C 14 254 47483 254.23 789 794 183.6
C 3 233 15794 81.68 789 794 183.6
C 0 207 14199 72.99 789 794 183.6
D 1 52 818001 4227.89 773 750 193.3
D 12 233 388946 2008.25 773 750 193.3
D 13 249 292977 1511.78 773 750 193.3

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