ASTROSAT CZTI

Data Quality Report

Orbit 38311

Creation date: 2024-06-27T21:51:06.810081
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/AS1C07_001T12_9000005372_38311cztM0_level2.fits modeM0/AS1C07_001T12_9000005372_38311cztM0_level2_quad_clean.evt
Size (bytes)1,641,798,720219,816,000
Size1.5 GB 209.6 MB
Events in quadrant A9,761,0481,680,714
Events in quadrant B7,712,5581,736,390
Events in quadrant C7,355,6621,674,483
Events in quadrant D34,741,738489,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385015
B0334794
C0316424
D01138464

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155494202.701138%
B15549870.559522%
C15549120.077175%
D155491128072.544858%

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 19757 15552 324 324 1.64% 2.08%
B 19757 15552 48 48 0.24% 0.31%
C 19757 15552 5 5 0.03% 0.03%
D 19757 15551 11247 11247 56.93% 72.32%

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 1806038 5290.63 1710 1677 341.0
A 10 83 1027576 3008.08 1710 1677 341.0
A 12 189 123193 356.3 1710 1677 341.0
B 0 183 265918 815.7 1707 1661 324.0
B 0 229 255349 783.07 1707 1661 324.0
B 5 172 212507 650.83 1707 1661 324.0
C 15 214 655475 1688.7 1676 1685 387.2
C 14 254 72542 183.02 1676 1685 387.2
C 14 67 37203 91.74 1676 1685 387.2
D 10 203 20212617 69981.69 1201 1164 288.8
D 2 16 4723548 16351.14 1201 1164 288.8
D 12 235 4242065 14684.02 1201 1164 288.8

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