ASTROSAT CZTI

Data Quality Report

Orbit 40662

Creation date: 2024-06-27T22:18:50.531690
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_029T02_9000005558_40662cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40662cztM0_level2_quad_clean.evt
Size (bytes)290,954,88087,649,920
Size277.5 MB 83.6 MB
Events in quadrant A2,717,419600,509
Events in quadrant B2,617,159621,814
Events in quadrant C2,451,350595,653
Events in quadrant D2,587,357480,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111483
B0112012
C0104002
D0114122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A508080.157480%
B5080490.964567%
C508070.137795%
D508064212.637795%

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 7052 5081 3 3 0.04% 0.06%
B 7052 5081 13 13 0.18% 0.26%
C 7052 5081 4 4 0.06% 0.08%
D 7052 5081 40 40 0.57% 0.79%

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 470893 4081.08 567 556 115.2
A 15 191 34981 298.7 567 556 115.2
A 13 6 10078 82.62 567 556 115.2
B 0 229 216109 1953.33 568 551 110.4
B 0 190 94555 851.84 568 551 110.4
B 4 171 56673 508.56 568 551 110.4
C 15 214 223204 1728.66 555 559 128.8
C 0 10 22163 167.74 555 559 128.8
C 3 233 19685 148.5 555 559 128.8
D 2 250 218234 1739.99 508 494 125.1
D 12 191 178056 1418.92 508 494 125.1
D 12 227 82067 651.86 508 494 125.1

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