ASTROSAT CZTI

Data Quality Report

Orbit 20191228_A07_047T09_9000003396_level2

Creation date: 2019-12-31T11:28:04.273353
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_047T09_9000003396cztM0_level2_bc.evt modeM0/AS1A07_047T09_9000003396cztM0_level2_quad_clean.evt
Size (bytes)1,023,111,360446,474,880
Size975.7 MB 425.8 MB
Events in quadrant A6,084,1602,964,758
Events in quadrant B6,658,3663,041,278
Events in quadrant C6,024,7362,931,230
Events in quadrant D10,412,6062,769,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05380
B05380
C05380
D05380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0548650
B0571520
C0555680
D0713570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630
B0630
C0630
D0630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A264331750.662051%
B264332971.123596%
C264333731.411115%
D2643311314.278742%

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 32763 26434 2 2 0.01% 0.01%
B 32763 26434 1 1 0.00% 0.00%
C 32763 26434 1 1 0.00% 0.00%
D 32763 26432 184 184 0.56% 0.70%

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 14 237 60363 178.25 1549 1530 330.1
A 4 2 44231 129.37 1549 1530 330.1
A 13 254 40039 116.67 1549 1530 330.1
B 0 190 220086 757.32 1580 1554 288.6
B 0 189 191828 659.4 1580 1554 288.6
B 3 209 75267 255.45 1580 1554 288.6
C 7 247 147962 414.36 1515 1519 353.4
C 0 10 49513 135.8 1515 1519 353.4
C 13 61 8766 20.51 1515 1519 353.4
D 1 52 1848093 5315.81 1506 1463 347.4
D 12 227 1141476 3281.7 1506 1463 347.4
D 13 153 508333 1459.1 1506 1463 347.4

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