ASTROSAT CZTI

Data Quality Report

Orbit 08091

Creation date: 2024-06-27T15:27:49.794636
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/AS1A02_055T01_9000001114_08091cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08091cztM0_level2_quad_clean.evt
Size (bytes)494,472,96091,595,520
Size471.6 MB 87.4 MB
Events in quadrant A3,057,392580,952
Events in quadrant B3,259,327600,681
Events in quadrant C3,349,364605,078
Events in quadrant D4,890,492556,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131043
B0137362
C0140622
D0185662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6176590.955311%
B6176731.181995%
C6176580.939119%
D61763555.748057%

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 7516 6178 0 0 0.00% 0.00%
B 7516 6178 3 3 0.04% 0.05%
C 7516 6178 5 5 0.07% 0.08%
D 7516 6178 204 204 2.71% 3.30%

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 13 164 14652 87.43 790 774 158.7
A 0 226 7447 42.04 790 774 158.7
A 12 194 6956 38.95 790 774 158.7
B 11 51 109585 724.83 799 781 150.1
B 0 231 37177 242.46 799 781 150.1
B 12 111 15329 96.92 799 781 150.1
C 1 16 151505 837.32 786 792 180.0
C 0 224 128761 710.96 786 792 180.0
C 13 61 5927 28.53 786 792 180.0
D 1 52 1954763 10436.52 764 744 187.2
D 7 71 39296 205.91 764 744 187.2
D 2 234 20472 105.37 764 744 187.2

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