ASTROSAT CZTI

Data Quality Report

Orbit 37566

Creation date: 2024-06-27T21:41:36.546445
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/AS1C07_001T11_9000005336_37566cztM0_level2.evt modeM0/AS1C07_001T11_9000005336_37566cztM0_level2_quad_clean.evt
Size (bytes)407,992,32097,436,160
Size389.1 MB 92.9 MB
Events in quadrant A2,599,084645,189
Events in quadrant B2,825,011662,603
Events in quadrant C2,686,890662,138
Events in quadrant D3,888,605613,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111643
B0118522
C0113052
D0152782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5246240.457491%
B5246791.505909%
C5246490.934045%
D52463416.500191%

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 7339 5247 10 10 0.14% 0.19%
B 7339 5247 53 53 0.72% 1.01%
C 7339 5247 37 37 0.50% 0.71%
D 7339 5247 327 327 4.46% 6.23%

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 10 83 301165 2593.75 572 560 115.9
A 9 143 44828 381.96 572 560 115.9
A 13 6 12919 106.64 572 560 115.9
B 5 255 159915 1466.99 577 563 108.6
B 5 172 102068 934.45 577 563 108.6
B 0 213 65817 600.73 577 563 108.6
C 15 214 234884 1778.32 564 568 131.8
C 0 10 159364 1205.17 564 568 131.8
C 14 254 90912 685.66 564 568 131.8
D 2 249 504475 3760.02 546 529 134.0
D 2 250 438708 3269.32 546 529 134.0
D 10 199 288308 2147.17 546 529 134.0

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