ASTROSAT CZTI

Data Quality Report

Orbit 25734

Creation date: 2024-06-27T19:20:54.197322
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/AS1A09_008T06_9000003748_25734cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25734cztM0_level2_quad_clean.evt
Size (bytes)500,552,64072,126,720
Size477.4 MB 68.8 MB
Events in quadrant A3,177,043451,188
Events in quadrant B3,292,022457,917
Events in quadrant C3,234,987440,427
Events in quadrant D5,058,384425,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134220
B0136560
C0133960
D0191870

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5855861.468830%
B5856871.485656%
C58561242.117486%
D58564096.984290%

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 7090 5855 0 0 0.00% 0.00%
B 7091 5856 5 5 0.07% 0.09%
C 7091 5856 0 0 0.00% 0.00%
D 7091 5856 283 283 3.99% 4.83%

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 6 16 45493 278.31 811 797 160.6
A 13 254 9110 51.76 811 797 160.6
A 0 226 6875 37.84 811 797 160.6
B 0 190 32055 209.15 810 792 149.5
B 0 219 24630 159.48 810 792 149.5
B 15 222 22228 143.41 810 792 149.5
C 14 238 127083 693.36 787 795 182.1
C 3 233 35252 189.18 787 795 182.1
C 1 16 5606 26.41 787 795 182.1
D 7 80 917904 4793.74 782 762 191.3
D 1 52 807005 4214.09 782 762 191.3
D 8 195 188656 982.09 782 762 191.3

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