ASTROSAT CZTI

Data Quality Report

Orbit 04126

Creation date: 2024-06-27T14:37:45.443286
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/AS1G05_195T01_9000000530_04126cztM0_level2.evt modeM0/AS1G05_195T01_9000000530_04126cztM0_level2_quad_clean.evt
Size (bytes)838,866,24076,380,480
Size800.0 MB 72.8 MB
Events in quadrant A4,618,363500,260
Events in quadrant B3,477,006512,077
Events in quadrant C3,028,807502,975
Events in quadrant D13,854,529355,800

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180483
B0146242
C0136332
D0454922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62995168.191776%
B6299821.301794%
C6299390.619146%
D6299543786.315288%

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 7524 6300 184 184 2.45% 2.92%
B 7524 6300 32 32 0.43% 0.51%
C 7524 6300 4 4 0.05% 0.06%
D 7524 6300 5346 5346 71.05% 84.86%

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 0 50 937152 6476.05 707 693 144.6
A 0 199 813581 5621.5 707 693 144.6
A 0 226 81666 559.97 707 693 144.6
B 15 204 228208 1614.83 737 721 140.9
B 5 184 129253 912.39 737 721 140.9
B 4 48 121085 854.41 737 721 140.9
C 9 144 279111 1715.02 697 700 162.3
C 10 65 16857 99.53 697 700 162.3
C 12 4 9237 52.59 697 700 162.3
D 2 37 11432610 89223.5 532 518 128.1
D 12 233 168270 1309.25 532 518 128.1
D 10 40 88303 685.13 532 518 128.1

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