ASTROSAT CZTI

Data Quality Report

Orbit 27544

Creation date: 2024-06-27T19:41:19.812906
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_038T29_9000003954_27544cztM0_level2.evt modeM0/AS1A09_038T29_9000003954_27544cztM0_level2_quad_clean.evt
Size (bytes)387,714,24080,611,200
Size369.8 MB 76.9 MB
Events in quadrant A2,439,225537,433
Events in quadrant B2,874,909547,050
Events in quadrant C2,430,078537,349
Events in quadrant D3,681,709492,814

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100820
B0114950
C099540
D0141190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4641611.314372%
B46411703.663004%
C4641450.969619%
D46413257.002801%

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 5921 4642 41 41 0.69% 0.88%
B 5921 4642 106 106 1.79% 2.28%
C 5921 4642 0 0 0.00% 0.00%
D 5921 4641 201 201 3.39% 4.33%

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 6 16 119864 999.61 601 591 119.3
A 13 254 7680 59.41 601 591 119.3
A 3 137 5390 40.22 601 591 119.3
B 10 245 468672 4202.64 601 587 111.4
B 15 32 21794 190.4 601 587 111.4
B 0 230 17417 151.11 601 587 111.4
C 14 238 97856 702.49 597 601 138.4
C 13 61 4121 25.43 597 601 138.4
C 7 221 2528 13.92 597 601 138.4
D 1 52 1437745 10463.19 579 564 137.4
D 2 250 32306 231.09 579 564 137.4
D 12 227 15539 109.02 579 564 137.4

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