ASTROSAT CZTI

Data Quality Report

Orbit 07856

Creation date: 2024-06-27T15:24:50.867017
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/AS1G06_077T02_9000001076_07856cztM0_level2.evt modeM0/AS1G06_077T02_9000001076_07856cztM0_level2_quad_clean.evt
Size (bytes)469,379,52087,819,840
Size447.6 MB 83.8 MB
Events in quadrant A3,042,094556,632
Events in quadrant B4,145,420556,773
Events in quadrant C3,321,904562,076
Events in quadrant D3,268,331534,718

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133123
B0165632
C0143142
D0139972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434490.761579%
B64343515.455393%
C6434490.761579%
D6434500.777122%

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 7519 6435 1 1 0.01% 0.02%
B 7519 6435 187 187 2.49% 2.91%
C 7519 6435 4 4 0.05% 0.06%
D 7519 6435 14 14 0.19% 0.22%

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 13 248 17038 102.41 781 766 158.9
A 15 174 10321 60.13 781 766 158.9
A 15 234 8031 45.72 781 766 158.9
B 4 239 618602 4199.47 776 759 147.1
B 4 173 280793 1903.39 776 759 147.1
B 5 255 97561 657.96 776 759 147.1
C 1 16 322183 1814.69 763 768 177.1
C 10 22 11366 59.84 763 768 177.1
C 8 229 7174 36.17 763 768 177.1
D 1 52 143668 780.33 754 733 183.2
D 13 104 80758 436.89 754 733 183.2
D 5 233 59281 319.63 754 733 183.2

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