ASTROSAT CZTI

Data Quality Report

Orbit 17855

Creation date: 2024-06-27T17:41:42.446432
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_085T01_9000002658_17855cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17855cztM0_level2_quad_clean.evt
Size (bytes)446,757,12088,493,760
Size426.1 MB 84.4 MB
Events in quadrant A3,128,043564,062
Events in quadrant B3,182,519567,420
Events in quadrant C3,226,577548,254
Events in quadrant D3,544,163540,045

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139311
B0139101
C0139221
D0152791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65892734.143269%
B65903044.613050%
C65903194.840668%
D65903475.265554%

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 6684 6590 0 0 0.00% 0.00%
B 6685 6591 1 1 0.01% 0.02%
C 6685 6591 0 0 0.00% 0.00%
D 6685 6591 105 105 1.57% 1.59%

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 0 226 6914 36.92 812 794 165.8
A 3 137 6712 35.7 812 794 165.8
A 12 194 5874 30.64 812 794 165.8
B 12 111 20085 120.14 807 784 160.7
B 11 111 17126 101.72 807 784 160.7
B 14 111 14940 88.11 807 784 160.7
C 14 238 117932 626.27 780 785 187.1
C 5 218 32712 170.68 780 785 187.1
C 3 233 31572 164.59 780 785 187.1
D 7 238 467633 2176.52 784 767 214.5
D 10 70 49423 226.83 784 767 214.5
D 2 234 33121 150.83 784 767 214.5

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