ASTROSAT CZTI

Data Quality Report

Orbit 18180

Creation date: 2024-06-27T17:46:17.142076
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/AS1A05_063T02_9000002708_18180cztM0_level2.evt modeM0/AS1A05_063T02_9000002708_18180cztM0_level2_quad_clean.evt
Size (bytes)518,250,24071,245,440
Size494.2 MB 67.9 MB
Events in quadrant A3,639,303436,777
Events in quadrant B3,893,914439,916
Events in quadrant C3,870,551420,797
Events in quadrant D3,862,698418,728

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146202
B0154191
C0153281
D0153781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63211422.246480%
B63212634.160734%
C63212033.211517%
D63211201.898434%

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 7661 6322 26 26 0.34% 0.41%
B 7661 6322 107 107 1.40% 1.69%
C 7661 6322 54 54 0.70% 0.85%
D 7661 6322 48 48 0.63% 0.76%

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 4 2 206859 1164.71 887 872 176.9
A 15 174 26776 146.47 887 872 176.9
A 0 226 7934 39.93 887 872 176.9
B 7 220 436910 2690.22 863 845 162.1
B 0 229 23191 137.86 863 845 162.1
B 0 189 22774 135.29 863 845 162.1
C 4 254 458898 2360.92 838 847 194.0
C 14 238 133343 682.92 838 847 194.0
C 13 61 5998 26.55 838 847 194.0
D 7 238 488155 2352.83 864 843 207.1
D 10 70 48731 231.21 864 843 207.1
D 2 234 29442 138.08 864 843 207.1

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