ASTROSAT CZTI

Data Quality Report

Orbit 12606

Creation date: 2024-06-27T16:29:54.083031
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_071T01_9000001874_12606cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12606cztM0_level2_quad_clean.evt
Size (bytes)530,461,440101,684,160
Size505.9 MB 97.0 MB
Events in quadrant A3,270,627666,686
Events in quadrant B4,648,679646,311
Events in quadrant C3,734,137678,311
Events in quadrant D3,976,331640,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139693
B0181762
C0153562
D0161942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6417550.857098%
B641764910.113760%
C64171402.181705%
D64172533.942652%

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 9033 6418 1 1 0.01% 0.02%
B 9033 6418 456 456 5.05% 7.11%
C 9033 6419 97 97 1.07% 1.51%
D 9033 6419 128 128 1.42% 1.99%

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 3 1 45110 262.91 832 815 168.5
A 9 143 17823 100.95 832 815 168.5
A 12 189 9067 48.98 832 815 168.5
B 4 239 1416519 9573.31 792 773 147.9
B 0 85 43626 289.77 792 773 147.9
B 3 209 30613 201.78 792 773 147.9
C 15 208 479466 2543.66 825 832 188.2
C 14 234 38971 202.69 825 832 188.2
C 13 61 6124 28.12 825 832 188.2
D 1 52 670448 3518.55 803 783 190.3
D 10 199 154941 809.98 803 783 190.3
D 13 249 57878 299.99 803 783 190.3

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