ASTROSAT CZTI

Data Quality Report

Orbit 38655

Creation date: 2024-06-27T21:54:42.092847
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/AS1A12_061T03_9000005390_38655cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38655cztM0_level2_quad_clean.evt
Size (bytes)371,177,28099,250,560
Size354.0 MB 94.7 MB
Events in quadrant A3,556,235657,765
Events in quadrant B2,879,651674,893
Events in quadrant C3,082,030657,193
Events in quadrant D3,755,998597,593

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141463
B0125162
C0127472
D0150502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5987590.985469%
B5987350.584600%
C5987390.651411%
D59871612.689160%

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 7330 5988 36 36 0.49% 0.60%
B 7330 5988 26 26 0.35% 0.43%
C 7330 5988 21 21 0.29% 0.35%
D 7330 5988 145 145 1.98% 2.42%

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 469787 3422.91 670 655 137.1
A 9 143 262264 1908.77 670 655 137.1
A 13 248 163850 1190.71 670 655 137.1
B 5 184 130708 1003.88 671 653 129.6
B 0 221 22731 170.42 671 653 129.6
B 5 172 21088 157.73 671 653 129.6
C 15 214 240862 1549.79 661 665 155.0
C 14 254 227691 1464.81 661 665 155.0
C 0 10 11264 68.39 661 665 155.0
D 13 249 451321 2793.61 658 639 161.3
D 5 222 325600 2014.31 658 639 161.3
D 12 233 120476 742.83 658 639 161.3

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