ASTROSAT CZTI

Data Quality Report

Orbit 13246

Creation date: 2024-06-27T16:38:19.984711
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/AS1G08_077T01_9000001970_13246cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13246cztM0_level2_quad_clean.evt
Size (bytes)454,872,96097,387,200
Size433.8 MB 92.9 MB
Events in quadrant A3,093,327618,749
Events in quadrant B4,254,411611,948
Events in quadrant C3,000,902641,317
Events in quadrant D2,975,615614,174

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139093
B0172932
C0136702
D0137392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6644140.210716%
B66444246.381698%
C6644250.376279%
D6644150.225768%

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 7615 6646 1 1 0.01% 0.02%
B 7615 6646 271 271 3.56% 4.08%
C 7615 6646 8 8 0.11% 0.12%
D 7615 6646 8 8 0.11% 0.12%

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 15 239 95763 617.39 757 742 153.9
A 12 189 56395 361.6 757 742 153.9
A 1 162 13878 85.35 757 742 153.9
B 4 239 1130013 8093.03 747 727 139.5
B 3 64 68929 488.77 747 727 139.5
B 4 142 30570 213.87 747 727 139.5
C 14 234 58512 332.63 752 755 173.6
C 15 208 8027 41.88 752 755 173.6
C 13 61 5411 26.81 752 755 173.6
D 5 222 71274 398.79 738 717 176.9
D 1 52 51850 289.01 738 717 176.9
D 13 104 29565 163.05 738 717 176.9

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