ASTROSAT CZTI

Data Quality Report

Orbit 40499

Creation date: 2024-06-27T22:16:50.768672
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/AS1A12_022T01_9000005540_40499cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40499cztM0_level2_quad_clean.evt
Size (bytes)304,801,92088,444,800
Size290.7 MB 84.3 MB
Events in quadrant A2,835,852593,541
Events in quadrant B2,416,426608,460
Events in quadrant C2,582,803582,886
Events in quadrant D3,014,301504,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119503
B0113032
C0114212
D0131242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555280.144092%
B555280.144092%
C5552130.234150%
D55524137.438761%

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 7195 5553 4 4 0.06% 0.07%
B 7195 5553 2 2 0.03% 0.04%
C 7195 5553 7 7 0.10% 0.13%
D 7195 5553 85 85 1.18% 1.53%

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 496093 4140.84 585 574 119.7
A 12 189 53322 440.79 585 574 119.7
A 2 79 14321 114.88 585 574 119.7
B 3 112 43155 372.34 582 563 114.4
B 5 255 36482 314.01 582 563 114.4
B 4 170 32098 275.68 582 563 114.4
C 15 214 243970 1840.51 570 573 132.2
C 14 254 59463 445.31 570 573 132.2
C 0 207 26314 194.65 570 573 132.2
D 12 227 335023 2464.88 545 528 135.7
D 2 250 273025 2008.02 545 528 135.7
D 12 191 131634 966.11 545 528 135.7

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