ASTROSAT CZTI

Data Quality Report

Orbit 34509

Creation date: 2022-02-15T10:39:58.731450
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_156T01_9000004928_34509cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34509cztM0_level2_quad_clean.evt
Size (bytes)487,802,88052,634,880
Size465.2 MB 50.2 MB
Events in quadrant A2,801,758315,596
Events in quadrant B4,266,511310,623
Events in quadrant C3,090,927310,164
Events in quadrant D4,263,369294,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114513
B0160402
C0124472
D0162312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5180210.405405%
B51804839.324324%
C5180450.868726%
D51801432.760618%

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 7273 5181 4 4 0.05% 0.08%
B 7273 5181 340 340 4.67% 6.56%
C 7273 5181 34 34 0.47% 0.66%
D 7273 5181 115 115 1.58% 2.22%

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 15 17 51969 373.03 693 682 137.5
A 10 83 38149 272.52 693 682 137.5
A 9 143 21319 150.1 693 682 137.5
B 5 172 1038158 8430.18 658 645 123.1
B 0 229 346138 2807.26 658 645 123.1
B 4 232 131566 1063.78 658 645 123.1
C 15 214 221842 1459.78 665 671 151.5
C 0 10 136934 899.37 665 671 151.5
C 14 67 81080 530.72 665 671 151.5
D 8 195 528705 3249.13 668 651 162.5
D 12 17 261303 1603.8 668 651 162.5
D 2 250 147707 904.84 668 651 162.5

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