ASTROSAT CZTI

Data Quality Report

Orbit 10981

Creation date: 2024-06-27T16:06:31.209456
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_027T06_9000001594_10981cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10981cztM0_level2_quad_clean.evt
Size (bytes)422,377,92060,220,800
Size402.8 MB 57.4 MB
Events in quadrant A3,019,956355,981
Events in quadrant B3,557,761353,332
Events in quadrant C2,759,898353,506
Events in quadrant D3,041,521336,671

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129032
B0144591
C0123721
D0131501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6065500.824402%
B60652023.330585%
C6065430.708986%
D6065671.104699%

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 7110 6066 4 4 0.06% 0.07%
B 7110 6065 90 90 1.27% 1.48%
C 7110 6065 1 1 0.01% 0.02%
D 7110 6066 28 28 0.39% 0.46%

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 5 117475 779.34 729 714 149.8
A 15 223 41639 273.16 729 714 149.8
A 8 15 34285 224.07 729 714 149.8
B 4 239 604066 4380.07 726 709 137.8
B 0 214 36824 262.18 726 709 137.8
B 0 219 23277 163.83 726 709 137.8
C 1 3 10670 61.07 705 709 163.1
C 13 61 5294 28.11 705 709 163.1
C 14 234 2833 13.02 705 709 163.1
D 1 52 116130 697.65 696 676 165.5
D 5 222 81998 491.4 696 676 165.5
D 13 152 49971 297.87 696 676 165.5

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