ASTROSAT CZTI

Data Quality Report

Orbit 45823

Creation date: 2024-06-27T23:16:34.437981
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/AS1T05_185T01_9000006128_45823cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45823cztM0_level2_quad_clean.evt
Size (bytes)507,818,88099,656,640
Size484.3 MB 95.0 MB
Events in quadrant A5,289,479673,951
Events in quadrant B5,058,429660,486
Events in quadrant C2,667,947685,800
Events in quadrant D5,326,018586,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192151
B0188781
C0119891
D0197591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58831652.804691%
B588459910.180150%
C5884430.730795%
D58844687.953773%

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 7018 5884 4 4 0.06% 0.07%
B 7019 5885 365 365 5.20% 6.20%
C 7019 5885 0 0 0.00% 0.00%
D 7019 5885 503 503 7.17% 8.55%

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 2508073 17819.2 680 664 140.7
A 15 14 113604 802.62 680 664 140.7
A 13 248 31733 220.8 680 664 140.7
B 3 112 1823801 14390.45 659 639 126.7
B 0 189 316667 2494.45 659 639 126.7
B 0 171 133369 1047.65 659 639 126.7
C 3 233 12619 74.49 681 685 160.2
C 13 61 4520 23.94 681 685 160.2
C 12 2 2241 9.71 681 685 160.2
D 11 241 1282220 7830.31 658 637 163.7
D 6 143 641858 3917.78 658 637 163.7
D 1 47 244970 1492.84 658 637 163.7

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