ASTROSAT CZTI

Data Quality Report

Orbit 02485

Creation date: 2024-06-27T14:18:31.506795
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/AS1SLEW_01234_9000000371_02485cztM0_level2.evt modeM0/AS1SLEW_01234_9000000371_02485cztM0_level2_quad_clean.evt
Size (bytes)81,224,64021,015,360
Size77.5 MB 20.0 MB
Events in quadrant A530,911132,798
Events in quadrant B569,908133,159
Events in quadrant C550,018133,481
Events in quadrant D707,853129,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028830
B029300
C028910
D033490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144200.000000%
B144210.069348%
C144210.069348%
D1442332.288488%

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 1442 1442 0 0 0.00% 0.00%
B 1442 1442 2 2 0.14% 0.14%
C 1442 1442 0 0 0.00% 0.00%
D 1442 1442 41 41 2.84% 2.84%

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 3 254 2701 85.48 136 133 30.0
A 14 63 2283 71.57 136 133 30.0
A 12 194 1466 44.37 136 133 30.0
B 10 244 27757 950.44 140 136 29.1
B 5 6 2410 78.25 140 136 29.1
B 12 111 2126 68.48 140 136 29.1
C 8 112 8354 244.25 135 135 33.7
C 10 65 4648 134.11 135 135 33.7
C 12 4 4246 122.17 135 135 33.7
D 7 67 146592 4502.83 128 125 32.5
D 2 184 48349 1482.55 128 125 32.5
D 13 53 10499 318.93 128 125 32.5

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
Veto Counter