ASTROSAT CZTI

Data Quality Report

Orbit 06735

Creation date: 2024-06-27T15:10:57.395281
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/AS1C02_003T01_9000000924_06735cztM0_level2.evt modeM0/AS1C02_003T01_9000000924_06735cztM0_level2_quad_clean.evt
Size (bytes)1,064,810,880179,550,720
Size1015.5 MB 171.2 MB
Events in quadrant A7,502,3531,106,094
Events in quadrant B7,222,4591,120,397
Events in quadrant C7,353,8161,087,525
Events in quadrant D9,107,6441,041,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0331534
B0323144
C0328554
D0376864

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156811651.052229%
B156812121.351955%
C156811771.128755%
D156812301.466743%

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 16811 15685 11 11 0.07% 0.07%
B 16811 15685 0 0 0.00% 0.00%
C 16811 15685 7 7 0.04% 0.04%
D 16811 15685 66 66 0.39% 0.42%

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 14 111 298966 803.91 1823 1785 369.7
A 8 15 133039 355.06 1823 1785 369.7
A 3 1 30218 76.91 1823 1785 369.7
B 4 81 50531 138.86 1843 1796 351.0
B 12 111 37661 102.19 1843 1796 351.0
B 11 111 30207 80.95 1843 1796 351.0
C 12 16 220992 528.38 1786 1790 414.9
C 9 16 136436 324.56 1786 1790 414.9
C 12 4 20233 44.46 1786 1790 414.9
D 8 195 862511 1997.24 1774 1715 431.0
D 2 136 641571 1484.61 1774 1715 431.0
D 7 203 397921 919.29 1774 1715 431.0

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