ASTROSAT CZTI

Data Quality Report

Orbit 12665

Creation date: 2024-06-27T16:30:45.563855
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/AS1A04_174T01_9000001876_12665cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12665cztM0_level2_quad_clean.evt
Size (bytes)492,022,08091,800,000
Size469.2 MB 87.5 MB
Events in quadrant A3,595,163610,054
Events in quadrant B4,707,837571,408
Events in quadrant C3,060,239598,066
Events in quadrant D3,126,484577,343

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144362
B0179741
C0128861
D0132311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60611332.194357%
B606163710.509817%
C60611021.682891%
D60611061.748886%

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 7323 6063 4 4 0.05% 0.07%
B 7322 6062 460 460 6.28% 7.59%
C 7323 6063 15 15 0.20% 0.25%
D 7323 6063 13 13 0.18% 0.21%

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 5 112 494358 3103.57 780 767 159.0
A 8 15 54796 339.72 780 767 159.0
A 12 189 44933 277.7 780 767 159.0
B 4 239 1440867 10279.91 748 732 140.1
B 3 64 110522 783.7 748 732 140.1
B 11 51 82811 585.89 748 732 140.1
C 15 208 94915 535.07 759 766 176.0
C 14 234 6854 34.6 759 766 176.0
C 13 61 5615 27.56 759 766 176.0
D 1 52 76205 382.59 754 742 197.2
D 2 14 54307 271.57 754 742 197.2
D 13 104 46803 233.52 754 742 197.2

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