ASTROSAT CZTI

Data Quality Report

Orbit 31569

Creation date: 2024-06-27T20:30:03.985767
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/AS1A10_056T01_9000004598_31569cztM0_level2.evt modeM0/AS1A10_056T01_9000004598_31569cztM0_level2_quad_clean.evt
Size (bytes)561,453,120117,774,720
Size535.4 MB 112.3 MB
Events in quadrant A3,161,242795,059
Events in quadrant B5,175,073812,804
Events in quadrant C3,700,647784,241
Events in quadrant D4,547,398742,335

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134302
B0197322
C0149722
D0175014

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6190480.775444%
B61901502.423263%
C61902233.602585%
D61891702.746809%

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 7465 6190 3 3 0.04% 0.05%
B 7465 6190 11 11 0.15% 0.18%
C 7465 6190 36 36 0.48% 0.58%
D 7464 6189 81 81 1.09% 1.31%

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 5 168 17674 104.75 813 798 161.1
A 13 254 11743 67.94 813 798 161.1
A 3 137 7771 43.28 813 798 161.1
B 6 159 1686754 11265.85 818 799 149.7
B 4 80 129177 857.84 818 799 149.7
B 0 190 70914 468.52 818 799 149.7
C 3 233 255660 1376.91 797 803 185.1
C 14 238 130635 701.44 797 803 185.1
C 0 10 76424 408.56 797 803 185.1
D 8 195 1236572 6642.68 788 768 186.0
D 13 249 129864 693.92 788 768 186.0
D 12 218 122181 652.62 788 768 186.0

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