ASTROSAT CZTI

Data Quality Report

Orbit 26371

Creation date: 2024-06-27T19:27:55.494292
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_088T01_9000003808_26371cztM0_level2.evt modeM0/AS1A09_088T01_9000003808_26371cztM0_level2_quad_clean.evt
Size (bytes)691,470,72087,984,000
Size659.4 MB 83.9 MB
Events in quadrant A3,291,241600,057
Events in quadrant B3,313,848612,375
Events in quadrant C6,531,895505,724
Events in quadrant D7,381,558509,361

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138850
B0138910
C0236670
D0262650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6256460.735294%
B6256540.863171%
C6256134321.467391%
D6255129320.671463%

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 7506 6257 3 3 0.04% 0.05%
B 7506 6257 0 0 0.00% 0.00%
C 7506 6256 835 835 11.12% 13.35%
D 7505 6256 968 968 12.90% 15.47%

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 38084 223.55 843 829 166.6
A 13 254 10136 55.85 843 829 166.6
A 0 226 7344 39.09 843 829 166.6
B 0 230 25504 159.22 843 825 155.0
B 12 111 17570 108.03 843 825 155.0
B 11 111 15798 96.6 843 825 155.0
C 3 233 3524275 21855.31 706 715 161.2
C 14 238 114729 707.19 706 715 161.2
C 2 16 103487 637.46 706 715 161.2
D 7 80 3727148 21449.92 735 716 173.7
D 1 52 586415 3371.37 735 716 173.7
D 11 176 154241 883.71 735 716 173.7

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