ASTROSAT CZTI

Data Quality Report

Orbit 33139

Creation date: 2024-06-27T20:45:23.990452
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/AS1A11_096T01_9000004766_33139cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33139cztM0_level2_quad_clean.evt
Size (bytes)560,059,20081,354,240
Size534.1 MB 77.6 MB
Events in quadrant A2,806,884523,905
Events in quadrant B4,600,017521,876
Events in quadrant C3,384,394511,430
Events in quadrant D5,756,620480,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124493
B0177022
C0140292
D0213742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A610490.147444%
B61045959.747706%
C61041181.933159%
D61044928.060288%

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 8817 6106 0 0 0.00% 0.00%
B 8817 6106 255 255 2.89% 4.18%
C 8817 6106 82 82 0.93% 1.34%
D 8817 6106 347 347 3.94% 5.68%

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 14 235 19673 130.6 717 698 145.3
A 13 6 11251 72.63 717 698 145.3
A 13 254 10701 68.85 717 698 145.3
B 5 172 1015230 7665.69 693 677 132.3
B 0 219 490394 3700.17 693 677 132.3
B 0 189 203477 1532.3 693 677 132.3
C 7 221 315198 1957.78 694 701 160.6
C 0 10 186054 1153.84 694 701 160.6
C 9 187 106568 659.03 694 701 160.6
D 8 195 1164850 6878.32 673 656 169.3
D 2 250 820620 4844.53 673 656 169.3
D 1 47 266856 1572.77 673 656 169.3

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