ASTROSAT CZTI

Data Quality Report

Orbit 34474

Creation date: 2022-02-12T11:48:27.816634
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/AS1A10_071T13_9000004922_34474cztM0_level2.evt modeM0/AS1A10_071T13_9000004922_34474cztM0_level2_quad_clean.evt
Size (bytes)1,306,175,040178,243,200
Size1.2 GB 170.0 MB
Events in quadrant A7,822,4551,093,574
Events in quadrant B8,970,8191,116,943
Events in quadrant C8,112,0681,103,919
Events in quadrant D13,596,5811,004,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331655
B0366124
C0332444
D0509714

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156381080.690625%
B156384662.979921%
C15638210.134288%
D15638179311.465661%

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 19876 15641 69 69 0.35% 0.44%
B 19876 15641 298 298 1.50% 1.91%
C 19876 15641 11 11 0.06% 0.07%
D 19876 15640 1558 1558 7.84% 9.96%

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 15 169 445779 1203.25 1851 1811 369.0
A 7 16 92817 246.65 1851 1811 369.0
A 10 83 77078 203.99 1851 1811 369.0
B 5 172 1480042 4214.7 1825 1772 350.7
B 0 189 102404 286.91 1825 1772 350.7
B 0 190 86261 240.89 1825 1772 350.7
C 15 214 655121 1572.93 1797 1808 415.3
C 3 233 152863 363.68 1797 1808 415.3
C 14 67 129219 306.76 1797 1808 415.3
D 7 223 2999018 7263.95 1694 1648 412.6
D 8 195 1700802 4117.8 1694 1648 412.6
D 12 79 1289143 3120.17 1694 1648 412.6

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