ASTROSAT CZTI

Data Quality Report

Orbit 16993

Creation date: 2024-06-27T17:30:23.855994
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/AS1A05_143T01_9000002524_16993cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16993cztM0_level2_quad_clean.evt
Size (bytes)536,961,60076,700,160
Size512.1 MB 73.1 MB
Events in quadrant A3,747,386486,472
Events in quadrant B3,766,729504,655
Events in quadrant C3,428,205486,217
Events in quadrant D4,949,546462,855

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145191
B0145341
C0137841
D0182911

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54584878.922682%
B54594678.554680%
C5459951.740245%
D545954710.020150%

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 6795 5460 273 273 4.02% 5.00%
B 6796 5461 342 342 5.03% 6.26%
C 6796 5461 0 0 0.00% 0.00%
D 6796 5461 387 387 5.69% 7.09%

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 15 174 1124197 8201.9 682 668 137.0
A 0 226 6043 39.24 682 668 137.0
A 12 194 5135 32.61 682 668 137.0
B 3 64 992633 7829.53 673 656 126.7
B 0 229 89327 699.86 673 656 126.7
B 6 36 20562 157.11 673 656 126.7
C 3 233 626226 3884.9 691 696 161.0
C 14 238 108521 669.65 691 696 161.0
C 13 61 4962 26.49 691 696 161.0
D 1 52 2342976 14273.69 680 660 164.1
D 2 234 20491 120.85 680 660 164.1
D 2 152 14936 87.0 680 660 164.1

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