ASTROSAT CZTI

Data Quality Report

Orbit 40227

Creation date: 2024-06-27T22:13:50.728124
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/AS1C07_001T01_9000005532_40227cztM0_level2.fits modeM0/AS1C07_001T01_9000005532_40227cztM0_level2_quad_clean.evt
Size (bytes)331,591,68092,543,040
Size316.2 MB 88.3 MB
Events in quadrant A2,831,513621,605
Events in quadrant B3,306,352645,417
Events in quadrant C2,691,880618,814
Events in quadrant D3,051,922562,936

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116820
B0130340
C0112380
D0125920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5045701.387512%
B50451112.200198%
C5045280.555005%
D50451122.220020%

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 6988 5046 36 36 0.52% 0.71%
B 6988 5046 53 53 0.76% 1.05%
C 6988 5046 17 17 0.24% 0.34%
D 6988 5046 78 78 1.12% 1.55%

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 455759 3842.85 580 569 118.5
A 13 248 116076 975.14 580 569 118.5
A 13 252 9564 75.94 580 569 118.5
B 7 202 626484 5693.53 583 568 109.9
B 5 255 182712 1656.84 583 568 109.9
B 4 171 84050 759.38 583 568 109.9
C 15 214 216891 1613.65 579 583 134.0
C 9 187 136075 1010.76 579 583 134.0
C 0 10 47985 353.62 579 583 134.0
D 12 227 351447 2552.89 569 554 137.4
D 12 233 188537 1367.66 569 554 137.4
D 13 249 158003 1145.51 569 554 137.4

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