ASTROSAT CZTI

Data Quality Report

Orbit 12424

Creation date: 2024-06-27T16:27:08.586254
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/AS1A04_085T02_9000001846_12424cztM0_level2.evt modeM0/AS1A04_085T02_9000001846_12424cztM0_level2_quad_clean.evt
Size (bytes)335,635,20038,548,800
Size320.1 MB 36.8 MB
Events in quadrant A2,688,697220,816
Events in quadrant B2,260,937223,302
Events in quadrant C1,843,499221,764
Events in quadrant D3,090,004209,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107700
B094330
C084420
D0120550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A41351092.636034%
B41351012.442563%
C4135130.314389%
D41352175.247884%

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 4136 4136 66 66 1.60% 1.60%
B 4136 4136 59 59 1.43% 1.43%
C 4136 4136 2 2 0.05% 0.05%
D 4136 4136 163 163 3.94% 3.94%

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 13 251 676801 6835.86 475 464 98.9
A 1 162 59014 591.78 475 464 98.9
A 1 178 29150 289.93 475 464 98.9
B 4 239 274687 2946.12 478 467 93.1
B 3 64 62637 667.93 478 467 93.1
B 3 209 16675 174.13 478 467 93.1
C 15 208 13796 119.49 469 472 111.5
C 13 61 3451 26.72 469 472 111.5
C 8 222 1163 6.2 469 472 111.5
D 1 52 687853 6139.25 458 444 112.0
D 13 104 540192 4820.49 458 444 112.0
D 8 195 35597 313.95 458 444 112.0

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