ASTROSAT CZTI

Data Quality Report

Orbit 32772

Creation date: 2024-06-27T20:41:51.641976
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/AS1T04_064T01_9000004730_32772cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32772cztM0_level2_quad_clean.evt
Size (bytes)628,151,04065,963,520
Size599.1 MB 62.9 MB
Events in quadrant A4,052,620413,356
Events in quadrant B2,925,639450,306
Events in quadrant C2,904,924447,321
Events in quadrant D8,804,250336,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153973
B0117812
C0114522
D0295782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49813507.026701%
B4981310.622365%
C4981711.425417%
D4981162332.583819%

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 7074 4982 246 246 3.48% 4.94%
B 7074 4982 17 17 0.24% 0.34%
C 7074 4982 50 50 0.71% 1.00%
D 7074 4982 1737 1737 24.55% 34.87%

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 15 237 877791 6678.25 661 651 131.3
A 12 16 496803 3777.54 661 651 131.3
A 12 194 77165 582.55 661 651 131.3
B 0 219 94917 744.51 680 667 126.6
B 5 172 81645 639.67 680 667 126.6
B 10 246 18171 138.27 680 667 126.6
C 0 10 215660 1442.25 654 663 149.1
C 4 254 48630 321.77 654 663 149.1
C 3 233 29919 196.26 654 663 149.1
D 8 195 4252862 28128.53 587 577 151.2
D 2 249 1539248 10178.19 587 577 151.2
D 7 80 147424 971.38 587 577 151.2

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