ASTROSAT CZTI

Data Quality Report

Orbit 37295

Creation date: 2024-06-27T21:38:02.831974
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/AS1A10_103T07_9000005302_37295cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37295cztM0_level2_quad_clean.evt
Size (bytes)438,229,44075,781,440
Size417.9 MB 72.3 MB
Events in quadrant A2,986,653476,108
Events in quadrant B2,897,352480,192
Events in quadrant C3,503,375473,605
Events in quadrant D3,479,662448,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127403
B0125762
C0142162
D0146392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5958190.318899%
B5958290.486741%
C59581382.316213%
D59582063.457536%

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 7271 5959 11 11 0.15% 0.18%
B 7271 5959 15 15 0.21% 0.25%
C 7271 5959 124 124 1.71% 2.08%
D 7271 5959 162 162 2.23% 2.72%

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 293770 2174.23 669 655 134.8
A 13 248 35241 256.55 669 655 134.8
A 7 16 21377 153.71 669 655 134.8
B 0 213 90345 686.05 665 648 130.7
B 0 221 65221 493.89 665 648 130.7
B 12 18 39445 296.74 665 648 130.7
C 1 23 452324 3002.36 644 649 150.4
C 0 10 271235 1798.63 644 649 150.4
C 15 214 249447 1653.8 644 649 150.4
D 10 253 341610 2187.68 638 620 155.9
D 12 227 225492 1442.71 638 620 155.9
D 10 199 164735 1052.91 638 620 155.9

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