ASTROSAT CZTI

Data Quality Report

Orbit 33769

Creation date: 2024-06-27T20:52:27.601423
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_086T01_9000004820_33769cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33769cztM0_level2_quad_clean.evt
Size (bytes)770,284,80052,824,960
Size734.6 MB 50.4 MB
Events in quadrant A9,270,625256,401
Events in quadrant B3,846,716330,199
Events in quadrant C3,382,167334,707
Events in quadrant D6,465,342299,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312923
B0150222
C0134722
D0230302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5401224941.640437%
B54012524.665803%
C5401891.647843%
D540185315.793372%

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 7314 5402 2052 2052 28.06% 37.99%
B 7314 5402 183 183 2.50% 3.39%
C 7314 5402 69 69 0.94% 1.28%
D 7314 5402 839 839 11.47% 15.53%

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 15 169 5109139 42369.17 607 595 120.6
A 15 237 1792408 14860.91 607 595 120.6
A 13 6 16676 133.37 607 595 120.6
B 5 172 734564 5627.87 696 678 130.4
B 0 189 176804 1350.64 696 678 130.4
B 3 112 48909 369.86 696 678 130.4
C 15 214 236117 1485.79 693 701 158.4
C 9 187 226307 1423.88 693 701 158.4
C 0 10 145073 911.18 693 701 158.4
D 8 195 1189846 7340.08 660 644 162.0
D 2 249 953123 5878.96 660 644 162.0
D 7 223 563652 3475.04 660 644 162.0

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