ASTROSAT CZTI

Data Quality Report

Orbit 04794

Creation date: 2024-06-27T14:47:07.183509
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/AS1G05_156T09_9000000604_04794cztM0_level2.evt modeM0/AS1G05_156T09_9000000604_04794cztM0_level2_quad_clean.evt
Size (bytes)562,080,96077,696,640
Size536.0 MB 74.1 MB
Events in quadrant A4,242,926472,748
Events in quadrant B4,236,769465,921
Events in quadrant C4,123,194462,726
Events in quadrant D3,940,817459,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175833
B0174752
C0169702
D0166302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70643354.742356%
B70641331.882786%
C70641021.443941%
D7064440.622877%

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 7674 7065 213 213 2.78% 3.01%
B 7674 7065 66 66 0.86% 0.93%
C 7674 7065 27 27 0.35% 0.38%
D 7674 7065 29 29 0.38% 0.41%

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 0 50 673479 4202.18 783 765 160.1
A 14 238 408205 2545.12 783 765 160.1
A 8 15 75947 469.63 783 765 160.1
B 14 167 569668 3686.36 803 783 154.3
B 10 16 297868 1925.1 803 783 154.3
B 8 3 144844 933.51 803 783 154.3
C 8 208 1065562 5879.38 776 780 181.1
C 12 4 12082 62.41 776 780 181.1
C 1 16 7442 36.79 776 780 181.1
D 13 235 309189 1651.83 774 749 186.7
D 2 136 269324 1438.33 774 749 186.7
D 12 22 147122 783.89 774 749 186.7

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