ASTROSAT CZTI

Data Quality Report

Orbit 12739

Creation date: 2024-06-27T16:31:47.019677
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/AS1G08_021T01_9000001880_12739cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12739cztM0_level2_quad_clean.evt
Size (bytes)506,741,760106,983,360
Size483.3 MB 102.0 MB
Events in quadrant A3,322,726729,605
Events in quadrant B5,323,507637,661
Events in quadrant C2,974,021718,362
Events in quadrant D3,277,161693,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143593
B0202582
C0135742
D0145722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66091582.390679%
B6609116817.672870%
C6609510.771675%
D66091542.330156%

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 8930 6613 1 1 0.01% 0.02%
B 8930 6613 645 645 7.22% 9.75%
C 8930 6613 0 0 0.00% 0.00%
D 8930 6613 90 90 1.01% 1.36%

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 8 15 216463 1359.22 788 771 158.7
A 9 143 28166 172.63 788 771 158.7
A 12 189 27511 168.51 788 771 158.7
B 4 239 2484452 18833.55 704 688 131.9
B 0 190 24599 181.31 704 688 131.9
B 12 111 14540 105.04 704 688 131.9
C 13 61 5660 28.07 762 763 174.4
C 8 222 2496 9.93 762 763 174.4
C 3 202 1963 6.88 762 763 174.4
D 1 52 362010 2088.92 739 721 173.0
D 2 136 39283 222.96 739 721 173.0
D 10 157 35378 200.38 739 721 173.0

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